./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8 --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 51c32a91c699292d3a71549ca427833cc8b88f69 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8 --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 51c32a91c699292d3a71549ca427833cc8b88f69 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:17:18,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:17:18,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:17:18,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:17:18,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:17:18,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:17:18,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:17:18,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:17:18,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:17:18,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:17:18,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:17:18,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:17:18,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:17:18,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:17:18,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:17:18,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:17:18,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:17:18,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:17:18,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:17:18,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:17:18,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:17:18,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:17:18,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:17:18,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:17:18,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:17:18,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:17:18,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:17:18,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:17:18,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:17:18,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:17:18,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:17:18,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:17:18,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:17:18,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:17:18,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:17:18,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:17:18,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:17:18,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:17:18,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:17:18,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:17:18,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:17:18,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:17:18,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:17:18,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:17:18,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:17:18,348 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:17:18,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:17:18,349 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:17:18,349 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:17:18,350 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:17:18,350 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:17:18,350 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:17:18,351 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:17:18,351 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:17:18,351 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:17:18,352 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:17:18,352 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:17:18,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:17:18,353 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:17:18,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:17:18,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:17:18,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:17:18,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:17:18,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:17:18,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:17:18,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:17:18,356 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:17:18,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:17:18,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:17:18,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:17:18,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:17:18,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:17:18,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:17:18,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:17:18,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:17:18,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:17:18,359 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:17:18,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:17:18,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:17:18,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:17:18,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:17:18,360 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_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c32a91c699292d3a71549ca427833cc8b88f69 [2021-10-13 07:17:18,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:17:18,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:17:18,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:17:18,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:17:18,771 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:17:18,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c [2021-10-13 07:17:18,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data/e7562b662/7a81d044faf74c1fb06337bd39e53e08/FLAG4f563c0b8 [2021-10-13 07:17:19,459 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:17:19,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c [2021-10-13 07:17:19,477 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data/e7562b662/7a81d044faf74c1fb06337bd39e53e08/FLAG4f563c0b8 [2021-10-13 07:17:19,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data/e7562b662/7a81d044faf74c1fb06337bd39e53e08 [2021-10-13 07:17:19,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:17:19,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:17:19,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:17:19,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:17:19,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:17:19,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:19" (1/1) ... [2021-10-13 07:17:19,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38026818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:19, skipping insertion in model container [2021-10-13 07:17:19,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:19" (1/1) ... [2021-10-13 07:17:19,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:17:19,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:17:20,142 WARN L228 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_14863b74-09df-467f-af62-4986485345bc/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c[35356,35369] [2021-10-13 07:17:20,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:17:20,184 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:17:20,299 WARN L228 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_14863b74-09df-467f-af62-4986485345bc/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c[35356,35369] [2021-10-13 07:17:20,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:17:20,338 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:17:20,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20 WrapperNode [2021-10-13 07:17:20,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:17:20,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:17:20,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:17:20,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:17:20,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:17:20,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:17:20,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:17:20,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:17:20,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:17:20,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:17:20,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:17:20,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:17:20,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (1/1) ... [2021-10-13 07:17:20,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:17:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:20,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:17:20,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:17:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:17:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:17:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:17:20,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:17:20,725 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:17:21,404 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 07:17:21,404 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 07:17:21,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:17:21,973 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:17:21,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:21 BoogieIcfgContainer [2021-10-13 07:17:21,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:17:21,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:17:21,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:17:21,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:17:21,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:17:19" (1/3) ... [2021-10-13 07:17:21,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd1aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:21, skipping insertion in model container [2021-10-13 07:17:21,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:20" (2/3) ... [2021-10-13 07:17:21,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd1aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:21, skipping insertion in model container [2021-10-13 07:17:21,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:21" (3/3) ... [2021-10-13 07:17:21,989 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-1.c [2021-10-13 07:17:22,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:17:22,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:17:22,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:17:22,090 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, mConcurrency=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 [2021-10-13 07:17:22,090 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:17:22,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.7590361445783131) internal successors, (146), 84 states have internal predecessors, (146), 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) [2021-10-13 07:17:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:17:22,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:22,129 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:22,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:22,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1993327240, now seen corresponding path program 1 times [2021-10-13 07:17:22,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:17:22,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957590493] [2021-10-13 07:17:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:22,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:17:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:22,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:17:22,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957590493] [2021-10-13 07:17:22,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957590493] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:22,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:22,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:17:22,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604161401] [2021-10-13 07:17:22,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:22,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:17:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:22,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:22,499 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.7590361445783131) internal successors, (146), 84 states have internal predecessors, (146), 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 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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) [2021-10-13 07:17:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:22,699 INFO L93 Difference]: Finished difference Result 171 states and 295 transitions. [2021-10-13 07:17:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:22,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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 [2021-10-13 07:17:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:22,716 INFO L225 Difference]: With dead ends: 171 [2021-10-13 07:17:22,716 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 07:17:22,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 07:17:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-13 07:17:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 83 states have internal predecessors, (121), 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) [2021-10-13 07:17:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2021-10-13 07:17:22,792 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 19 [2021-10-13 07:17:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:22,793 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2021-10-13 07:17:22,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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) [2021-10-13 07:17:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2021-10-13 07:17:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:17:22,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:22,799 INFO L512 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] [2021-10-13 07:17:22,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:17:22,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2104536865, now seen corresponding path program 1 times [2021-10-13 07:17:22,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:17:22,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371651196] [2021-10-13 07:17:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:22,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:17:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:22,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:17:22,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371651196] [2021-10-13 07:17:22,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371651196] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:22,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:22,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:17:22,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397562119] [2021-10-13 07:17:22,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:22,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:17:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:22,929 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2021-10-13 07:17:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:23,067 INFO L93 Difference]: Finished difference Result 180 states and 263 transitions. [2021-10-13 07:17:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:23,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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 28 [2021-10-13 07:17:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:23,069 INFO L225 Difference]: With dead ends: 180 [2021-10-13 07:17:23,070 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 07:17:23,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 07:17:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2021-10-13 07:17:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 96 states have internal predecessors, (137), 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) [2021-10-13 07:17:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2021-10-13 07:17:23,096 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 28 [2021-10-13 07:17:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:23,097 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2021-10-13 07:17:23,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2021-10-13 07:17:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2021-10-13 07:17:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:17:23,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:23,101 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-13 07:17:23,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:17:23,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1002033589, now seen corresponding path program 1 times [2021-10-13 07:17:23,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:17:23,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223368553] [2021-10-13 07:17:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:23,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:17:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:17:23,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:17:23,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223368553] [2021-10-13 07:17:23,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223368553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:23,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:23,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:17:23,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860218558] [2021-10-13 07:17:23,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:23,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:17:23,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:23,205 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-13 07:17:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:23,332 INFO L93 Difference]: Finished difference Result 208 states and 299 transitions. [2021-10-13 07:17:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:23,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 39 [2021-10-13 07:17:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:23,340 INFO L225 Difference]: With dead ends: 208 [2021-10-13 07:17:23,341 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 07:17:23,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 07:17:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2021-10-13 07:17:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 111 states have internal predecessors, (155), 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) [2021-10-13 07:17:23,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 155 transitions. [2021-10-13 07:17:23,380 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 155 transitions. Word has length 39 [2021-10-13 07:17:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:23,382 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 155 transitions. [2021-10-13 07:17:23,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-13 07:17:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 155 transitions. [2021-10-13 07:17:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 07:17:23,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:23,385 INFO L512 BasicCegarLoop]: trace histogram [4, 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] [2021-10-13 07:17:23,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:17:23,386 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:23,386 INFO L82 PathProgramCache]: Analyzing trace with hash 651820670, now seen corresponding path program 1 times [2021-10-13 07:17:23,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:17:23,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924958875] [2021-10-13 07:17:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:23,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:17:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:17:23,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:17:23,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924958875] [2021-10-13 07:17:23,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924958875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:17:23,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421912134] [2021-10-13 07:17:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:23,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:23,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:17:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:17:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:23,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:17:23,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:17:24,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:17:24,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421912134] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:24,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:17:24,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2021-10-13 07:17:24,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841063557] [2021-10-13 07:17:24,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:17:24,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:17:24,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:17:24,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:17:24,377 INFO L87 Difference]: Start difference. First operand 112 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2021-10-13 07:17:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:24,824 INFO L93 Difference]: Finished difference Result 315 states and 470 transitions. [2021-10-13 07:17:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:17:24,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 [2021-10-13 07:17:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:24,828 INFO L225 Difference]: With dead ends: 315 [2021-10-13 07:17:24,828 INFO L226 Difference]: Without dead ends: 205 [2021-10-13 07:17:24,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:17:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-13 07:17:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2021-10-13 07:17:24,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.3763440860215055) internal successors, (256), 186 states have internal predecessors, (256), 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) [2021-10-13 07:17:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 256 transitions. [2021-10-13 07:17:24,860 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 256 transitions. Word has length 52 [2021-10-13 07:17:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:24,861 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 256 transitions. [2021-10-13 07:17:24,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2021-10-13 07:17:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 256 transitions. [2021-10-13 07:17:24,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 07:17:24,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:24,870 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2021-10-13 07:17:24,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:25,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:25,091 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:25,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:25,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2113402428, now seen corresponding path program 1 times [2021-10-13 07:17:25,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:17:25,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007278929] [2021-10-13 07:17:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:25,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:17:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:17:25,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:17:25,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007278929] [2021-10-13 07:17:25,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007278929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:25,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:25,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:17:25,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713040348] [2021-10-13 07:17:25,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:25,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:17:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:25,181 INFO L87 Difference]: Start difference. First operand 187 states and 256 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-10-13 07:17:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:25,304 INFO L93 Difference]: Finished difference Result 392 states and 545 transitions. [2021-10-13 07:17:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:25,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 68 [2021-10-13 07:17:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:25,307 INFO L225 Difference]: With dead ends: 392 [2021-10-13 07:17:25,310 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 07:17:25,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:25,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 07:17:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2021-10-13 07:17:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.3560975609756099) internal successors, (278), 205 states have internal predecessors, (278), 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) [2021-10-13 07:17:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2021-10-13 07:17:25,335 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 68 [2021-10-13 07:17:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:25,336 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2021-10-13 07:17:25,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-10-13 07:17:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2021-10-13 07:17:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 07:17:25,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:25,343 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 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] [2021-10-13 07:17:25,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:17:25,344 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:25,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:25,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1550287814, now seen corresponding path program 1 times [2021-10-13 07:17:25,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:17:25,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757512630] [2021-10-13 07:17:25,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:25,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:17:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:17:25,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:17:25,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757512630] [2021-10-13 07:17:25,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757512630] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:17:25,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163352018] [2021-10-13 07:17:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:25,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:25,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:25,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:17:25,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:17:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:25,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:17:25,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-13 07:17:26,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-13 07:17:26,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163352018] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:17:26,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:17:26,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 5 [2021-10-13 07:17:26,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763213362] [2021-10-13 07:17:26,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:26,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:17:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:17:26,383 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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) [2021-10-13 07:17:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:26,414 INFO L93 Difference]: Finished difference Result 408 states and 552 transitions. [2021-10-13 07:17:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:26,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 86 [2021-10-13 07:17:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:26,419 INFO L225 Difference]: With dead ends: 408 [2021-10-13 07:17:26,419 INFO L226 Difference]: Without dead ends: 406 [2021-10-13 07:17:26,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:17:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-10-13 07:17:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2021-10-13 07:17:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.3580246913580247) internal successors, (550), 405 states have internal predecessors, (550), 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) [2021-10-13 07:17:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 550 transitions. [2021-10-13 07:17:26,442 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 550 transitions. Word has length 86 [2021-10-13 07:17:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:26,442 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 550 transitions. [2021-10-13 07:17:26,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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) [2021-10-13 07:17:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 550 transitions. [2021-10-13 07:17:26,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-13 07:17:26,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:26,451 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 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] [2021-10-13 07:17:26,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:26,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:26,679 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:26,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash -667479750, now seen corresponding path program 1 times [2021-10-13 07:17:26,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:17:26,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591071333] [2021-10-13 07:17:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:26,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:17:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:17:26,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:17:26,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591071333] [2021-10-13 07:17:26,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591071333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:17:26,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565530243] [2021-10-13 07:17:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:26,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:26,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:26,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:17:26,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:17:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:27,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:17:27,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:17:27,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-10-13 07:17:27,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565530243] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:17:27,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [840590769] [2021-10-13 07:17:27,978 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2021-10-13 07:17:27,978 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:17:27,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:17:27,990 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:17:27,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:17:28,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,129 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:17:28,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:17:28,132 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:17:28,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:17:28,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-10-13 07:17:28,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,296 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:17:28,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:17:28,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:17:28,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:17:28,323 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:17:28,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,463 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:17:28,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:17:28,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:17:28,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:17:28,476 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:17:28,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:17:28,571 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:17:28,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:17:28,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:17:28,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:17:28,583 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:17:28,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:17:28,791 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:17:28,867 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.3 percent of original size [2021-10-13 07:17:28,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1062 [2021-10-13 07:17:28,904 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:17:28,905 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1128, output treesize:1062 [2021-10-13 07:17:28,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:29,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:17:29,136 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_21| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) 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:608) 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:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) 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) [2021-10-13 07:17:29,140 INFO L168 Benchmark]: Toolchain (without parser) took 9398.53 ms. Allocated memory was 92.3 MB in the beginning and 178.3 MB in the end (delta: 86.0 MB). Free memory was 56.8 MB in the beginning and 148.3 MB in the end (delta: -91.4 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:17:29,140 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 62.1 MB in the beginning and 62.1 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:17:29,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.79 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 56.6 MB in the beginning and 103.2 MB in the end (delta: -46.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:17:29,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.82 ms. Allocated memory is still 132.1 MB. Free memory was 103.2 MB in the beginning and 100.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:17:29,142 INFO L168 Benchmark]: Boogie Preprocessor took 45.59 ms. Allocated memory is still 132.1 MB. Free memory was 100.4 MB in the beginning and 98.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:17:29,142 INFO L168 Benchmark]: RCFGBuilder took 1502.19 ms. Allocated memory is still 132.1 MB. Free memory was 98.3 MB in the beginning and 103.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:17:29,143 INFO L168 Benchmark]: TraceAbstraction took 7160.77 ms. Allocated memory was 132.1 MB in the beginning and 178.3 MB in the end (delta: 46.1 MB). Free memory was 102.4 MB in the beginning and 148.3 MB in the end (delta: -45.9 MB). Peak memory consumption was 91.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:17:29,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 62.1 MB in the beginning and 62.1 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 593.79 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 56.6 MB in the beginning and 103.2 MB in the end (delta: -46.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.82 ms. Allocated memory is still 132.1 MB. Free memory was 103.2 MB in the beginning and 100.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.59 ms. Allocated memory is still 132.1 MB. Free memory was 100.4 MB in the beginning and 98.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1502.19 ms. Allocated memory is still 132.1 MB. Free memory was 98.3 MB in the beginning and 103.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7160.77 ms. Allocated memory was 132.1 MB in the beginning and 178.3 MB in the end (delta: 46.1 MB). Free memory was 102.4 MB in the beginning and 148.3 MB in the end (delta: -45.9 MB). Peak memory consumption was 91.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_21| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_21|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:17:29,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:17:32,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:17:32,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:17:32,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:17:32,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:17:32,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:17:32,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:17:32,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:17:32,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:17:32,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:17:32,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:17:32,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:17:32,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:17:32,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:17:32,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:17:32,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:17:32,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:17:32,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:17:32,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:17:32,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:17:32,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:17:32,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:17:32,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:17:32,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:17:32,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:17:32,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:17:32,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:17:32,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:17:32,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:17:32,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:17:32,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:17:32,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:17:32,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:17:32,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:17:32,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:17:32,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:17:32,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:17:32,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:17:32,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:17:32,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:17:32,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:17:32,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:17:32,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:17:32,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:17:32,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:17:32,330 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:17:32,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:17:32,330 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:17:32,330 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:17:32,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:17:32,331 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:17:32,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:17:32,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:17:32,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:17:32,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:17:32,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:17:32,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:17:32,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:17:32,333 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:17:32,333 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:17:32,333 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:17:32,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:17:32,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:17:32,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:17:32,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:17:32,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:17:32,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:17:32,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:17:32,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:17:32,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:17:32,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:17:32,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:17:32,336 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:17:32,336 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:17:32,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:17:32,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:17:32,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:17:32,337 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_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c32a91c699292d3a71549ca427833cc8b88f69 [2021-10-13 07:17:32,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:17:32,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:17:32,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:17:32,822 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:17:32,823 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:17:32,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c [2021-10-13 07:17:32,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data/1d4f3b2f1/4e9e398ca49b48cc861b75fe9f04fe39/FLAG5046d556a [2021-10-13 07:17:33,562 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:17:33,563 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c [2021-10-13 07:17:33,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data/1d4f3b2f1/4e9e398ca49b48cc861b75fe9f04fe39/FLAG5046d556a [2021-10-13 07:17:33,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/data/1d4f3b2f1/4e9e398ca49b48cc861b75fe9f04fe39 [2021-10-13 07:17:33,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:17:33,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:17:33,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:17:33,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:17:33,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:17:33,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:33" (1/1) ... [2021-10-13 07:17:33,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e2ef5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:33, skipping insertion in model container [2021-10-13 07:17:33,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:33" (1/1) ... [2021-10-13 07:17:33,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:17:33,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:17:34,276 WARN L228 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_14863b74-09df-467f-af62-4986485345bc/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c[35356,35369] [2021-10-13 07:17:34,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:17:34,343 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:17:34,451 WARN L228 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_14863b74-09df-467f-af62-4986485345bc/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-1.c[35356,35369] [2021-10-13 07:17:34,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:17:34,470 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:17:34,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34 WrapperNode [2021-10-13 07:17:34,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:17:34,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:17:34,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:17:34,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:17:34,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:17:34,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:17:34,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:17:34,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:17:34,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:17:34,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:17:34,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:17:34,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:17:34,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (1/1) ... [2021-10-13 07:17:34,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:17:34,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:17:34,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:17:34,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:17:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:17:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:17:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:17:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:17:34,855 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:17:35,599 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 07:17:35,601 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 07:17:35,617 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:17:35,617 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:17:35,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:35 BoogieIcfgContainer [2021-10-13 07:17:35,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:17:35,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:17:35,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:17:35,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:17:35,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:17:33" (1/3) ... [2021-10-13 07:17:35,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2115ceca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:35, skipping insertion in model container [2021-10-13 07:17:35,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:34" (2/3) ... [2021-10-13 07:17:35,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2115ceca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:35, skipping insertion in model container [2021-10-13 07:17:35,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:35" (3/3) ... [2021-10-13 07:17:35,633 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-1.c [2021-10-13 07:17:35,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:17:35,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:17:35,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:17:35,739 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, mConcurrency=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 [2021-10-13 07:17:35,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:17:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 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) [2021-10-13 07:17:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:17:35,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:35,798 INFO L512 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] [2021-10-13 07:17:35,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:35,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-10-13 07:17:35,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:35,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057518130] [2021-10-13 07:17:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:35,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:35,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:35,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:35,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:17:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:35,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:17:36,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:36,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:36,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:36,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057518130] [2021-10-13 07:17:36,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057518130] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:36,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:36,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:17:36,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665427308] [2021-10-13 07:17:36,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:36,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:36,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:36,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:36,385 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 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 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-13 07:17:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:36,550 INFO L93 Difference]: Finished difference Result 252 states and 427 transitions. [2021-10-13 07:17:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:36,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 [2021-10-13 07:17:36,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:36,563 INFO L225 Difference]: With dead ends: 252 [2021-10-13 07:17:36,564 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 07:17:36,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 07:17:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-13 07:17:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 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) [2021-10-13 07:17:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2021-10-13 07:17:36,620 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2021-10-13 07:17:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:36,621 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2021-10-13 07:17:36,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-13 07:17:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2021-10-13 07:17:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:17:36,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:36,624 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:17:36,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:36,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:36,840 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:36,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:36,841 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2021-10-13 07:17:36,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:36,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751115094] [2021-10-13 07:17:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:36,843 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:36,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:36,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:36,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:17:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:36,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:36,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:37,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:17:37,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:37,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751115094] [2021-10-13 07:17:37,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751115094] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:37,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:37,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:17:37,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289326716] [2021-10-13 07:17:37,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:37,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:37,248 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-10-13 07:17:37,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:37,475 INFO L93 Difference]: Finished difference Result 238 states and 360 transitions. [2021-10-13 07:17:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:37,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-10-13 07:17:37,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:37,478 INFO L225 Difference]: With dead ends: 238 [2021-10-13 07:17:37,479 INFO L226 Difference]: Without dead ends: 133 [2021-10-13 07:17:37,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-13 07:17:37,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2021-10-13 07:17:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 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) [2021-10-13 07:17:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2021-10-13 07:17:37,521 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2021-10-13 07:17:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:37,522 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2021-10-13 07:17:37,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-10-13 07:17:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2021-10-13 07:17:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:17:37,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:37,525 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:37,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:37,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:37,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:37,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:37,727 INFO L82 PathProgramCache]: Analyzing trace with hash 356453796, now seen corresponding path program 1 times [2021-10-13 07:17:37,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:37,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114109097] [2021-10-13 07:17:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:37,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:37,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:37,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:37,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:17:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:37,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:37,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:17:38,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:17:38,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:38,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114109097] [2021-10-13 07:17:38,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114109097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:38,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:38,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:17:38,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113413063] [2021-10-13 07:17:38,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:38,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:38,303 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-10-13 07:17:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:38,538 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions. [2021-10-13 07:17:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:38,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 [2021-10-13 07:17:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:38,544 INFO L225 Difference]: With dead ends: 271 [2021-10-13 07:17:38,544 INFO L226 Difference]: Without dead ends: 151 [2021-10-13 07:17:38,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:38,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-13 07:17:38,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-10-13 07:17:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 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) [2021-10-13 07:17:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2021-10-13 07:17:38,562 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2021-10-13 07:17:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:38,563 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2021-10-13 07:17:38,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-10-13 07:17:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2021-10-13 07:17:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 07:17:38,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:38,567 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:38,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:38,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:38,788 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:38,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:38,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1231505257, now seen corresponding path program 1 times [2021-10-13 07:17:38,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:38,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780653841] [2021-10-13 07:17:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:38,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:38,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:38,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:38,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:17:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:38,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:38,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:17:39,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:17:39,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:39,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780653841] [2021-10-13 07:17:39,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780653841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:39,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:39,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:17:39,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397786348] [2021-10-13 07:17:39,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:17:39,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:17:39,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:39,417 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-10-13 07:17:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:39,665 INFO L93 Difference]: Finished difference Result 355 states and 540 transitions. [2021-10-13 07:17:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:17:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 68 [2021-10-13 07:17:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:39,669 INFO L225 Difference]: With dead ends: 355 [2021-10-13 07:17:39,669 INFO L226 Difference]: Without dead ends: 218 [2021-10-13 07:17:39,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-13 07:17:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2021-10-13 07:17:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.4354066985645932) internal successors, (300), 209 states have internal predecessors, (300), 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) [2021-10-13 07:17:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 300 transitions. [2021-10-13 07:17:39,691 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 300 transitions. Word has length 68 [2021-10-13 07:17:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:39,692 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 300 transitions. [2021-10-13 07:17:39,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-10-13 07:17:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 300 transitions. [2021-10-13 07:17:39,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 07:17:39,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:39,696 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:39,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:17:39,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:39,910 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:39,910 INFO L82 PathProgramCache]: Analyzing trace with hash 339343392, now seen corresponding path program 1 times [2021-10-13 07:17:39,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:39,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761600865] [2021-10-13 07:17:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:39,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:39,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:39,913 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:39,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:17:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:40,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:40,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:17:40,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:17:40,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:40,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761600865] [2021-10-13 07:17:40,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761600865] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:40,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:40,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:17:40,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117811272] [2021-10-13 07:17:40,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:40,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:40,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:40,496 INFO L87 Difference]: Start difference. First operand 210 states and 300 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-10-13 07:17:40,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:40,651 INFO L93 Difference]: Finished difference Result 435 states and 629 transitions. [2021-10-13 07:17:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:40,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 69 [2021-10-13 07:17:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:40,655 INFO L225 Difference]: With dead ends: 435 [2021-10-13 07:17:40,655 INFO L226 Difference]: Without dead ends: 235 [2021-10-13 07:17:40,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-10-13 07:17:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 229. [2021-10-13 07:17:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4210526315789473) internal successors, (324), 228 states have internal predecessors, (324), 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) [2021-10-13 07:17:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 324 transitions. [2021-10-13 07:17:40,681 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 324 transitions. Word has length 69 [2021-10-13 07:17:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:40,683 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 324 transitions. [2021-10-13 07:17:40,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-10-13 07:17:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 324 transitions. [2021-10-13 07:17:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 07:17:40,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:40,696 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2021-10-13 07:17:40,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:40,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:40,921 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:40,922 INFO L82 PathProgramCache]: Analyzing trace with hash 200809614, now seen corresponding path program 1 times [2021-10-13 07:17:40,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:40,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985891983] [2021-10-13 07:17:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:40,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:40,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:40,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:40,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:17:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:41,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:41,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 07:17:41,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 07:17:41,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:41,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985891983] [2021-10-13 07:17:41,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985891983] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:41,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:41,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:17:41,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082607255] [2021-10-13 07:17:41,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:41,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:41,568 INFO L87 Difference]: Start difference. First operand 229 states and 324 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-10-13 07:17:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:41,720 INFO L93 Difference]: Finished difference Result 472 states and 676 transitions. [2021-10-13 07:17:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:41,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 86 [2021-10-13 07:17:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:41,726 INFO L225 Difference]: With dead ends: 472 [2021-10-13 07:17:41,726 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 07:17:41,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 07:17:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2021-10-13 07:17:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.4056224899598393) internal successors, (350), 249 states have internal predecessors, (350), 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) [2021-10-13 07:17:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 350 transitions. [2021-10-13 07:17:41,756 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 350 transitions. Word has length 86 [2021-10-13 07:17:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:41,758 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 350 transitions. [2021-10-13 07:17:41,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-10-13 07:17:41,760 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 350 transitions. [2021-10-13 07:17:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 07:17:41,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:41,765 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:41,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:41,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:41,978 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:41,979 INFO L82 PathProgramCache]: Analyzing trace with hash 311084899, now seen corresponding path program 1 times [2021-10-13 07:17:41,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:41,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978314659] [2021-10-13 07:17:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:41,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:41,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:41,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:41,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:17:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:42,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:42,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 07:17:42,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 07:17:42,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:42,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978314659] [2021-10-13 07:17:42,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978314659] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:42,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:42,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:17:42,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231130729] [2021-10-13 07:17:42,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:17:42,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:17:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:42,911 INFO L87 Difference]: Start difference. First operand 250 states and 350 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2021-10-13 07:17:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:42,962 INFO L93 Difference]: Finished difference Result 751 states and 1049 transitions. [2021-10-13 07:17:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:17:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 105 [2021-10-13 07:17:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:42,967 INFO L225 Difference]: With dead ends: 751 [2021-10-13 07:17:42,967 INFO L226 Difference]: Without dead ends: 511 [2021-10-13 07:17:42,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-10-13 07:17:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2021-10-13 07:17:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.3862745098039215) internal successors, (707), 510 states have internal predecessors, (707), 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) [2021-10-13 07:17:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 707 transitions. [2021-10-13 07:17:42,989 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 707 transitions. Word has length 105 [2021-10-13 07:17:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:42,989 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 707 transitions. [2021-10-13 07:17:42,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2021-10-13 07:17:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 707 transitions. [2021-10-13 07:17:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 07:17:42,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:42,996 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:43,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 07:17:43,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:43,212 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:43,213 INFO L82 PathProgramCache]: Analyzing trace with hash 856343647, now seen corresponding path program 1 times [2021-10-13 07:17:43,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:43,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410981890] [2021-10-13 07:17:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:43,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:43,214 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:43,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:17:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:43,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:43,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 07:17:43,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 07:17:44,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:44,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410981890] [2021-10-13 07:17:44,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410981890] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:44,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:44,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:17:44,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631087548] [2021-10-13 07:17:44,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:44,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:44,051 INFO L87 Difference]: Start difference. First operand 511 states and 707 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-10-13 07:17:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:44,083 INFO L93 Difference]: Finished difference Result 1033 states and 1428 transitions. [2021-10-13 07:17:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:44,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 105 [2021-10-13 07:17:44,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:44,089 INFO L225 Difference]: With dead ends: 1033 [2021-10-13 07:17:44,089 INFO L226 Difference]: Without dead ends: 532 [2021-10-13 07:17:44,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-13 07:17:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2021-10-13 07:17:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 1.3822975517890772) internal successors, (734), 531 states have internal predecessors, (734), 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) [2021-10-13 07:17:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 734 transitions. [2021-10-13 07:17:44,113 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 734 transitions. Word has length 105 [2021-10-13 07:17:44,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:44,114 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 734 transitions. [2021-10-13 07:17:44,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-10-13 07:17:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 734 transitions. [2021-10-13 07:17:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 07:17:44,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:44,117 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:44,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:44,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:44,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:44,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1695377309, now seen corresponding path program 1 times [2021-10-13 07:17:44,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:44,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041326384] [2021-10-13 07:17:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:44,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:44,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:44,333 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:44,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:17:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:44,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:17:44,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:17:45,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:45,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041326384] [2021-10-13 07:17:45,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041326384] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:45,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:45,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:17:45,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137443187] [2021-10-13 07:17:45,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:17:45,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:45,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:17:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:45,343 INFO L87 Difference]: Start difference. First operand 532 states and 734 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-10-13 07:17:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:45,377 INFO L93 Difference]: Finished difference Result 1081 states and 1489 transitions. [2021-10-13 07:17:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:17:45,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 105 [2021-10-13 07:17:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:45,384 INFO L225 Difference]: With dead ends: 1081 [2021-10-13 07:17:45,384 INFO L226 Difference]: Without dead ends: 559 [2021-10-13 07:17:45,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:17:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-10-13 07:17:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2021-10-13 07:17:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.3763440860215055) internal successors, (768), 558 states have internal predecessors, (768), 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) [2021-10-13 07:17:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 768 transitions. [2021-10-13 07:17:45,410 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 768 transitions. Word has length 105 [2021-10-13 07:17:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:45,410 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 768 transitions. [2021-10-13 07:17:45,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-10-13 07:17:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 768 transitions. [2021-10-13 07:17:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 07:17:45,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:45,413 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:45,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:45,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:45,633 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:45,634 INFO L82 PathProgramCache]: Analyzing trace with hash -915547054, now seen corresponding path program 1 times [2021-10-13 07:17:45,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:45,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794870216] [2021-10-13 07:17:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:45,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:45,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:45,637 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:45,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:17:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:46,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:46,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:17:46,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:17:46,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:46,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794870216] [2021-10-13 07:17:46,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794870216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:46,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:46,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:17:46,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022846867] [2021-10-13 07:17:46,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:17:46,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:17:46,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:46,640 INFO L87 Difference]: Start difference. First operand 559 states and 768 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-10-13 07:17:46,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:46,738 INFO L93 Difference]: Finished difference Result 1555 states and 2154 transitions. [2021-10-13 07:17:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:17:46,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 107 [2021-10-13 07:17:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:46,746 INFO L225 Difference]: With dead ends: 1555 [2021-10-13 07:17:46,747 INFO L226 Difference]: Without dead ends: 1033 [2021-10-13 07:17:46,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:46,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-10-13 07:17:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1033. [2021-10-13 07:17:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 1.3837209302325582) internal successors, (1428), 1032 states have internal predecessors, (1428), 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) [2021-10-13 07:17:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1428 transitions. [2021-10-13 07:17:46,791 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1428 transitions. Word has length 107 [2021-10-13 07:17:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:46,792 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1428 transitions. [2021-10-13 07:17:46,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-10-13 07:17:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1428 transitions. [2021-10-13 07:17:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-13 07:17:46,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:46,796 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:46,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:47,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:47,011 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:47,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1430305885, now seen corresponding path program 1 times [2021-10-13 07:17:47,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:47,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523086579] [2021-10-13 07:17:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:47,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:47,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:47,014 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:47,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:17:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:47,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:47,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-10-13 07:17:47,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-10-13 07:17:48,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:48,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523086579] [2021-10-13 07:17:48,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523086579] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:48,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:48,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:17:48,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421821700] [2021-10-13 07:17:48,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:17:48,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:17:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:48,207 INFO L87 Difference]: Start difference. First operand 1033 states and 1428 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2021-10-13 07:17:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:48,468 INFO L93 Difference]: Finished difference Result 1941 states and 2711 transitions. [2021-10-13 07:17:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:17:48,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 147 [2021-10-13 07:17:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:48,475 INFO L225 Difference]: With dead ends: 1941 [2021-10-13 07:17:48,476 INFO L226 Difference]: Without dead ends: 945 [2021-10-13 07:17:48,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-10-13 07:17:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 917. [2021-10-13 07:17:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 1.3526200873362446) internal successors, (1239), 916 states have internal predecessors, (1239), 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) [2021-10-13 07:17:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1239 transitions. [2021-10-13 07:17:48,514 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1239 transitions. Word has length 147 [2021-10-13 07:17:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:48,515 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1239 transitions. [2021-10-13 07:17:48,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2021-10-13 07:17:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1239 transitions. [2021-10-13 07:17:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-13 07:17:48,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:48,519 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:48,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:48,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:48,733 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:48,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:48,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1457199498, now seen corresponding path program 1 times [2021-10-13 07:17:48,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:48,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243085632] [2021-10-13 07:17:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:48,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:48,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:48,736 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:48,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:17:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:49,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:49,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-10-13 07:17:49,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-10-13 07:17:50,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:50,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243085632] [2021-10-13 07:17:50,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243085632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:50,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:50,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:17:50,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645077383] [2021-10-13 07:17:50,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:17:50,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:17:50,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:50,135 INFO L87 Difference]: Start difference. First operand 917 states and 1239 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-10-13 07:17:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:50,420 INFO L93 Difference]: Finished difference Result 1900 states and 2598 transitions. [2021-10-13 07:17:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:17:50,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 169 [2021-10-13 07:17:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:50,429 INFO L225 Difference]: With dead ends: 1900 [2021-10-13 07:17:50,429 INFO L226 Difference]: Without dead ends: 1020 [2021-10-13 07:17:50,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-10-13 07:17:50,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 992. [2021-10-13 07:17:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 991 states have (on average 1.338042381432896) internal successors, (1326), 991 states have internal predecessors, (1326), 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) [2021-10-13 07:17:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1326 transitions. [2021-10-13 07:17:50,481 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1326 transitions. Word has length 169 [2021-10-13 07:17:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:50,482 INFO L470 AbstractCegarLoop]: Abstraction has 992 states and 1326 transitions. [2021-10-13 07:17:50,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-10-13 07:17:50,482 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1326 transitions. [2021-10-13 07:17:50,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-10-13 07:17:50,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:50,488 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:50,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:50,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:50,703 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash -938185309, now seen corresponding path program 1 times [2021-10-13 07:17:50,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:50,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105483926] [2021-10-13 07:17:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:50,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:50,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:50,706 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:50,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:17:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:51,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:51,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-10-13 07:17:51,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-10-13 07:17:52,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:52,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105483926] [2021-10-13 07:17:52,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105483926] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:52,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:52,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:17:52,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711038109] [2021-10-13 07:17:52,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:17:52,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:17:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:52,466 INFO L87 Difference]: Start difference. First operand 992 states and 1326 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2021-10-13 07:17:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:52,752 INFO L93 Difference]: Finished difference Result 2049 states and 2770 transitions. [2021-10-13 07:17:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:17:52,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 209 [2021-10-13 07:17:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:52,759 INFO L225 Difference]: With dead ends: 2049 [2021-10-13 07:17:52,760 INFO L226 Difference]: Without dead ends: 1094 [2021-10-13 07:17:52,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-10-13 07:17:52,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1076. [2021-10-13 07:17:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 1.3227906976744186) internal successors, (1422), 1075 states have internal predecessors, (1422), 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) [2021-10-13 07:17:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1422 transitions. [2021-10-13 07:17:52,807 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1422 transitions. Word has length 209 [2021-10-13 07:17:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:52,808 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 1422 transitions. [2021-10-13 07:17:52,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2021-10-13 07:17:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1422 transitions. [2021-10-13 07:17:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-10-13 07:17:52,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:52,814 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 5, 5, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:17:52,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:53,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:53,032 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash -577912314, now seen corresponding path program 1 times [2021-10-13 07:17:53,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:53,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070217531] [2021-10-13 07:17:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:53,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:53,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:53,035 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:53,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:17:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:53,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:53,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-10-13 07:17:54,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-10-13 07:17:54,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:54,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070217531] [2021-10-13 07:17:54,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070217531] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:54,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:54,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:17:54,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341665964] [2021-10-13 07:17:54,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:17:54,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:17:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:54,706 INFO L87 Difference]: Start difference. First operand 1076 states and 1422 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2021-10-13 07:17:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:54,994 INFO L93 Difference]: Finished difference Result 2229 states and 2986 transitions. [2021-10-13 07:17:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:17:54,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 210 [2021-10-13 07:17:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:55,003 INFO L225 Difference]: With dead ends: 2229 [2021-10-13 07:17:55,003 INFO L226 Difference]: Without dead ends: 1190 [2021-10-13 07:17:55,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2021-10-13 07:17:55,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1169. [2021-10-13 07:17:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1168 states have (on average 1.30736301369863) internal successors, (1527), 1168 states have internal predecessors, (1527), 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) [2021-10-13 07:17:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1527 transitions. [2021-10-13 07:17:55,091 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1527 transitions. Word has length 210 [2021-10-13 07:17:55,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:55,091 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1527 transitions. [2021-10-13 07:17:55,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2021-10-13 07:17:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1527 transitions. [2021-10-13 07:17:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-10-13 07:17:55,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:55,100 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-10-13 07:17:55,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:55,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:55,317 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 191124316, now seen corresponding path program 1 times [2021-10-13 07:17:55,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:55,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768598621] [2021-10-13 07:17:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:55,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:55,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:55,320 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:55,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:17:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:56,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:56,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 578 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-10-13 07:17:56,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:17:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 578 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-10-13 07:17:57,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:17:57,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768598621] [2021-10-13 07:17:57,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768598621] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:17:57,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:17:57,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:17:57,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040817903] [2021-10-13 07:17:57,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:17:57,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:17:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:17:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:57,392 INFO L87 Difference]: Start difference. First operand 1169 states and 1527 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-13 07:17:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:17:57,522 INFO L93 Difference]: Finished difference Result 4475 states and 5859 transitions. [2021-10-13 07:17:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:17:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 253 [2021-10-13 07:17:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:17:57,545 INFO L225 Difference]: With dead ends: 4475 [2021-10-13 07:17:57,545 INFO L226 Difference]: Without dead ends: 3343 [2021-10-13 07:17:57,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:17:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2021-10-13 07:17:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3339. [2021-10-13 07:17:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3339 states, 3338 states have (on average 1.3088675853804674) internal successors, (4369), 3338 states have internal predecessors, (4369), 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) [2021-10-13 07:17:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 4369 transitions. [2021-10-13 07:17:57,730 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 4369 transitions. Word has length 253 [2021-10-13 07:17:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:17:57,731 INFO L470 AbstractCegarLoop]: Abstraction has 3339 states and 4369 transitions. [2021-10-13 07:17:57,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2021-10-13 07:17:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 4369 transitions. [2021-10-13 07:17:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-10-13 07:17:57,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:17:57,745 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-10-13 07:17:57,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:17:57,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:17:57,960 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:17:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:17:57,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1427850598, now seen corresponding path program 1 times [2021-10-13 07:17:57,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:17:57,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961686217] [2021-10-13 07:17:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:17:57,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:17:57,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:17:57,964 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:17:57,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:17:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:17:59,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:17:59,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:17:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-10-13 07:17:59,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-10-13 07:18:00,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:00,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961686217] [2021-10-13 07:18:00,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961686217] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:18:00,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:18:00,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:18:00,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748315182] [2021-10-13 07:18:00,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:18:00,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:18:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:18:00,242 INFO L87 Difference]: Start difference. First operand 3339 states and 4369 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-10-13 07:18:00,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:00,630 INFO L93 Difference]: Finished difference Result 7013 states and 9299 transitions. [2021-10-13 07:18:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:18:00,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 253 [2021-10-13 07:18:00,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:00,655 INFO L225 Difference]: With dead ends: 7013 [2021-10-13 07:18:00,656 INFO L226 Difference]: Without dead ends: 3711 [2021-10-13 07:18:00,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:18:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2021-10-13 07:18:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3663. [2021-10-13 07:18:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 1.2913708356089568) internal successors, (4729), 3662 states have internal predecessors, (4729), 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) [2021-10-13 07:18:00,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 4729 transitions. [2021-10-13 07:18:00,866 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 4729 transitions. Word has length 253 [2021-10-13 07:18:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:00,866 INFO L470 AbstractCegarLoop]: Abstraction has 3663 states and 4729 transitions. [2021-10-13 07:18:00,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-10-13 07:18:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 4729 transitions. [2021-10-13 07:18:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-10-13 07:18:00,883 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:00,884 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-10-13 07:18:00,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:01,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:01,102 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:18:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:01,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1039826631, now seen corresponding path program 1 times [2021-10-13 07:18:01,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:01,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989685079] [2021-10-13 07:18:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:01,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:01,104 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:01,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:18:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:02,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:18:02,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-10-13 07:18:02,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-10-13 07:18:03,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:03,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989685079] [2021-10-13 07:18:03,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989685079] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:18:03,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:18:03,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:18:03,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149168865] [2021-10-13 07:18:03,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:18:03,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:18:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:18:03,483 INFO L87 Difference]: Start difference. First operand 3663 states and 4729 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2021-10-13 07:18:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:03,847 INFO L93 Difference]: Finished difference Result 7436 states and 9629 transitions. [2021-10-13 07:18:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:18:03,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 278 [2021-10-13 07:18:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:03,873 INFO L225 Difference]: With dead ends: 7436 [2021-10-13 07:18:03,873 INFO L226 Difference]: Without dead ends: 3810 [2021-10-13 07:18:03,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:18:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-10-13 07:18:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3762. [2021-10-13 07:18:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3762 states, 3761 states have (on average 1.285296463706461) internal successors, (4834), 3761 states have internal predecessors, (4834), 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) [2021-10-13 07:18:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 4834 transitions. [2021-10-13 07:18:04,098 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 4834 transitions. Word has length 278 [2021-10-13 07:18:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:04,099 INFO L470 AbstractCegarLoop]: Abstraction has 3762 states and 4834 transitions. [2021-10-13 07:18:04,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2021-10-13 07:18:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 4834 transitions. [2021-10-13 07:18:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-10-13 07:18:04,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:04,116 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:18:04,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:04,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:04,333 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:18:04,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:04,334 INFO L82 PathProgramCache]: Analyzing trace with hash 493306300, now seen corresponding path program 1 times [2021-10-13 07:18:04,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:04,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895817543] [2021-10-13 07:18:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:04,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:04,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:04,336 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:04,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:18:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:05,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:18:05,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2021-10-13 07:18:06,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2021-10-13 07:18:06,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:06,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895817543] [2021-10-13 07:18:06,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895817543] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:18:06,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:18:06,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:18:06,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029455623] [2021-10-13 07:18:06,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:18:06,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:06,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:18:06,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:18:06,795 INFO L87 Difference]: Start difference. First operand 3762 states and 4834 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-10-13 07:18:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:07,066 INFO L93 Difference]: Finished difference Result 7838 states and 10205 transitions. [2021-10-13 07:18:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:18:07,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 296 [2021-10-13 07:18:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:07,094 INFO L225 Difference]: With dead ends: 7838 [2021-10-13 07:18:07,094 INFO L226 Difference]: Without dead ends: 4113 [2021-10-13 07:18:07,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:18:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2021-10-13 07:18:07,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 4095. [2021-10-13 07:18:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4095 states, 4094 states have (on average 1.2730825598436737) internal successors, (5212), 4094 states have internal predecessors, (5212), 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) [2021-10-13 07:18:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 5212 transitions. [2021-10-13 07:18:07,322 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 5212 transitions. Word has length 296 [2021-10-13 07:18:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:07,323 INFO L470 AbstractCegarLoop]: Abstraction has 4095 states and 5212 transitions. [2021-10-13 07:18:07,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-10-13 07:18:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 5212 transitions. [2021-10-13 07:18:07,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-10-13 07:18:07,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:07,339 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:18:07,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:07,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:07,558 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:18:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash -870156213, now seen corresponding path program 1 times [2021-10-13 07:18:07,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:07,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384477656] [2021-10-13 07:18:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:07,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:07,560 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:07,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:18:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:08,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:18:08,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 657 proven. 14 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-10-13 07:18:09,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 657 proven. 14 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-10-13 07:18:10,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:10,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384477656] [2021-10-13 07:18:10,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384477656] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:18:10,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [856521318] [2021-10-13 07:18:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:10,407 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:18:10,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:18:10,409 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:18:10,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-13 07:18:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:12,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:18:12,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 657 proven. 14 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-10-13 07:18:13,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 657 proven. 14 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-10-13 07:18:14,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [856521318] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:18:14,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960319144] [2021-10-13 07:18:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:14,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:18:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:18:14,090 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:18:14,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 07:18:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:16,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:18:16,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 657 proven. 14 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-10-13 07:18:16,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 657 proven. 14 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-10-13 07:18:17,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960319144] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:18:17,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:18:17,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:18:17,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147385729] [2021-10-13 07:18:17,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:18:17,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:17,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:18:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:18:17,519 INFO L87 Difference]: Start difference. First operand 4095 states and 5212 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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) [2021-10-13 07:18:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:18,336 INFO L93 Difference]: Finished difference Result 14021 states and 17816 transitions. [2021-10-13 07:18:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:18:18,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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 332 [2021-10-13 07:18:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:18,385 INFO L225 Difference]: With dead ends: 14021 [2021-10-13 07:18:18,385 INFO L226 Difference]: Without dead ends: 9963 [2021-10-13 07:18:18,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1994 GetRequests, 1986 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:18:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9963 states. [2021-10-13 07:18:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9963 to 5601. [2021-10-13 07:18:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5601 states, 5600 states have (on average 1.2960714285714285) internal successors, (7258), 5600 states have internal predecessors, (7258), 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) [2021-10-13 07:18:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 7258 transitions. [2021-10-13 07:18:18,680 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 7258 transitions. Word has length 332 [2021-10-13 07:18:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:18,681 INFO L470 AbstractCegarLoop]: Abstraction has 5601 states and 7258 transitions. [2021-10-13 07:18:18,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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) [2021-10-13 07:18:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 7258 transitions. [2021-10-13 07:18:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-10-13 07:18:18,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:18,702 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:18:18,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:18,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-10-13 07:18:19,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:19,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:19,331 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:18:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:19,332 INFO L82 PathProgramCache]: Analyzing trace with hash 803213586, now seen corresponding path program 1 times [2021-10-13 07:18:19,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:19,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011922336] [2021-10-13 07:18:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:19,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:19,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:19,334 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:19,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:18:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:21,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:18:21,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-10-13 07:18:21,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-10-13 07:18:22,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:22,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011922336] [2021-10-13 07:18:22,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011922336] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:18:22,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:18:22,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:18:22,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155925688] [2021-10-13 07:18:22,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:18:22,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:18:22,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:18:22,855 INFO L87 Difference]: Start difference. First operand 5601 states and 7258 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-10-13 07:18:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:23,060 INFO L93 Difference]: Finished difference Result 14622 states and 18919 transitions. [2021-10-13 07:18:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:18:23,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 334 [2021-10-13 07:18:23,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:23,084 INFO L225 Difference]: With dead ends: 14622 [2021-10-13 07:18:23,084 INFO L226 Difference]: Without dead ends: 9079 [2021-10-13 07:18:23,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:18:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9079 states. [2021-10-13 07:18:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9079 to 8514. [2021-10-13 07:18:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8514 states, 8513 states have (on average 1.28873487607189) internal successors, (10971), 8513 states have internal predecessors, (10971), 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) [2021-10-13 07:18:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8514 states to 8514 states and 10971 transitions. [2021-10-13 07:18:23,428 INFO L78 Accepts]: Start accepts. Automaton has 8514 states and 10971 transitions. Word has length 334 [2021-10-13 07:18:23,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:23,429 INFO L470 AbstractCegarLoop]: Abstraction has 8514 states and 10971 transitions. [2021-10-13 07:18:23,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-10-13 07:18:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 8514 states and 10971 transitions. [2021-10-13 07:18:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-10-13 07:18:23,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:23,445 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 14, 14, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-10-13 07:18:23,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:23,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:23,667 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:18:23,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:23,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2056915291, now seen corresponding path program 1 times [2021-10-13 07:18:23,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:23,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979719836] [2021-10-13 07:18:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:23,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:23,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:23,670 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:23,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:18:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:25,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:18:25,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 706 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-10-13 07:18:26,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 706 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-10-13 07:18:27,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:27,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979719836] [2021-10-13 07:18:27,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979719836] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:18:27,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:18:27,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:18:27,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542509849] [2021-10-13 07:18:27,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:18:27,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:27,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:18:27,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:18:27,079 INFO L87 Difference]: Start difference. First operand 8514 states and 10971 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2021-10-13 07:18:27,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:27,564 INFO L93 Difference]: Finished difference Result 17600 states and 22963 transitions. [2021-10-13 07:18:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:18:27,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 337 [2021-10-13 07:18:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:27,589 INFO L225 Difference]: With dead ends: 17600 [2021-10-13 07:18:27,590 INFO L226 Difference]: Without dead ends: 9261 [2021-10-13 07:18:27,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:18:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9261 states. [2021-10-13 07:18:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9261 to 9243. [2021-10-13 07:18:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9243 states, 9242 states have (on average 1.2726682536247564) internal successors, (11762), 9242 states have internal predecessors, (11762), 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) [2021-10-13 07:18:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 11762 transitions. [2021-10-13 07:18:27,915 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 11762 transitions. Word has length 337 [2021-10-13 07:18:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:27,916 INFO L470 AbstractCegarLoop]: Abstraction has 9243 states and 11762 transitions. [2021-10-13 07:18:27,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2021-10-13 07:18:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 11762 transitions. [2021-10-13 07:18:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-10-13 07:18:27,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:27,950 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 16, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1] [2021-10-13 07:18:27,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:28,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:28,172 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:18:28,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:28,173 INFO L82 PathProgramCache]: Analyzing trace with hash -423901292, now seen corresponding path program 1 times [2021-10-13 07:18:28,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:28,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970241207] [2021-10-13 07:18:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:28,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:28,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:28,175 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:28,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:18:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:30,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:18:30,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2021-10-13 07:18:31,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2021-10-13 07:18:31,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:31,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970241207] [2021-10-13 07:18:31,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970241207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:18:31,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:18:31,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:18:31,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522445570] [2021-10-13 07:18:31,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:18:31,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:18:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:18:31,864 INFO L87 Difference]: Start difference. First operand 9243 states and 11762 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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) [2021-10-13 07:18:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:32,275 INFO L93 Difference]: Finished difference Result 17804 states and 22657 transitions. [2021-10-13 07:18:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:18:32,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 414 [2021-10-13 07:18:32,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:32,289 INFO L225 Difference]: With dead ends: 17804 [2021-10-13 07:18:32,289 INFO L226 Difference]: Without dead ends: 4506 [2021-10-13 07:18:32,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:18:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-10-13 07:18:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4135. [2021-10-13 07:18:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 4134 states have (on average 1.2385099177552008) internal successors, (5120), 4134 states have internal predecessors, (5120), 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) [2021-10-13 07:18:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 5120 transitions. [2021-10-13 07:18:32,440 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 5120 transitions. Word has length 414 [2021-10-13 07:18:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:32,441 INFO L470 AbstractCegarLoop]: Abstraction has 4135 states and 5120 transitions. [2021-10-13 07:18:32,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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) [2021-10-13 07:18:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 5120 transitions. [2021-10-13 07:18:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-10-13 07:18:32,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:18:32,453 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 15, 13, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-10-13 07:18:32,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:32,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:18:32,674 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:18:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:18:32,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1411299152, now seen corresponding path program 1 times [2021-10-13 07:18:32,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:18:32,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077278630] [2021-10-13 07:18:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:32,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:18:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:18:32,677 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:18:32,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 07:18:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:34,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:18:34,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2530 backedges. 1498 proven. 15 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2021-10-13 07:18:35,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2530 backedges. 1498 proven. 15 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2021-10-13 07:18:37,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:18:37,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077278630] [2021-10-13 07:18:37,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077278630] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:18:37,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1408523726] [2021-10-13 07:18:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:37,108 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:18:37,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:18:37,109 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:18:37,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-13 07:18:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:40,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:18:40,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2530 backedges. 1498 proven. 15 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2021-10-13 07:18:41,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2530 backedges. 1498 proven. 15 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2021-10-13 07:18:42,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1408523726] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:18:42,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723691756] [2021-10-13 07:18:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:18:42,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:18:42,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:18:42,575 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:18:42,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 07:18:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:18:45,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:18:45,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:18:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2530 backedges. 1498 proven. 15 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2021-10-13 07:18:46,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:18:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2530 backedges. 1498 proven. 15 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2021-10-13 07:18:47,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723691756] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:18:47,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:18:47,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:18:47,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653263006] [2021-10-13 07:18:47,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:18:47,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:18:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:18:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:18:47,966 INFO L87 Difference]: Start difference. First operand 4135 states and 5120 transitions. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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) [2021-10-13 07:18:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:18:48,222 INFO L93 Difference]: Finished difference Result 4370 states and 5418 transitions. [2021-10-13 07:18:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:18:48,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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 484 [2021-10-13 07:18:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:18:48,223 INFO L225 Difference]: With dead ends: 4370 [2021-10-13 07:18:48,224 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:18:48,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2902 GetRequests, 2896 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:18:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:18:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:18:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-13 07:18:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:18:48,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 484 [2021-10-13 07:18:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:18:48,230 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:18:48,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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) [2021-10-13 07:18:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:18:48,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:18:48,234 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:18:48,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:48,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-13 07:18:48,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:18:48,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:18:48,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:18:48,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:49,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:50,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:50,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:50,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:50,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:18:53,086 INFO L857 garLoopResultBuilder]: For program point L531(lines 531 535) no Hoare annotation was computed. [2021-10-13 07:18:53,086 INFO L857 garLoopResultBuilder]: For program point L267(lines 267 269) no Hoare annotation was computed. [2021-10-13 07:18:53,087 INFO L857 garLoopResultBuilder]: For program point L267-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 07:18:53,087 INFO L857 garLoopResultBuilder]: For program point L433(lines 433 435) no Hoare annotation was computed. [2021-10-13 07:18:53,087 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 336) no Hoare annotation was computed. [2021-10-13 07:18:53,087 INFO L860 garLoopResultBuilder]: At program point L202(lines 201 489) the Hoare annotation is: true [2021-10-13 07:18:53,087 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 499) no Hoare annotation was computed. [2021-10-13 07:18:53,087 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 510) no Hoare annotation was computed. [2021-10-13 07:18:53,087 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 521) no Hoare annotation was computed. [2021-10-13 07:18:53,088 INFO L853 garLoopResultBuilder]: At program point L170(lines 166 500) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,088 INFO L853 garLoopResultBuilder]: At program point L104(lines 103 521) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) [2021-10-13 07:18:53,088 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-10-13 07:18:53,088 INFO L857 garLoopResultBuilder]: For program point L468-2(lines 468 470) no Hoare annotation was computed. [2021-10-13 07:18:53,088 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 440) no Hoare annotation was computed. [2021-10-13 07:18:53,088 INFO L857 garLoopResultBuilder]: For program point L436-2(lines 436 440) no Hoare annotation was computed. [2021-10-13 07:18:53,088 INFO L857 garLoopResultBuilder]: For program point L337(lines 337 341) no Hoare annotation was computed. [2021-10-13 07:18:53,089 INFO L857 garLoopResultBuilder]: For program point L337-2(lines 337 341) no Hoare annotation was computed. [2021-10-13 07:18:53,089 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 498) no Hoare annotation was computed. [2021-10-13 07:18:53,089 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 509) no Hoare annotation was computed. [2021-10-13 07:18:53,089 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 520) no Hoare annotation was computed. [2021-10-13 07:18:53,089 INFO L853 garLoopResultBuilder]: At program point L140(lines 136 510) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,089 INFO L857 garLoopResultBuilder]: For program point L306(lines 306 308) no Hoare annotation was computed. [2021-10-13 07:18:53,089 INFO L857 garLoopResultBuilder]: For program point L273(lines 273 277) no Hoare annotation was computed. [2021-10-13 07:18:53,089 INFO L857 garLoopResultBuilder]: For program point L240(lines 240 243) no Hoare annotation was computed. [2021-10-13 07:18:53,090 INFO L857 garLoopResultBuilder]: For program point L306-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 07:18:53,090 INFO L857 garLoopResultBuilder]: For program point L273-2(lines 273 277) no Hoare annotation was computed. [2021-10-13 07:18:53,090 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 408) no Hoare annotation was computed. [2021-10-13 07:18:53,090 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 375) no Hoare annotation was computed. [2021-10-13 07:18:53,090 INFO L853 garLoopResultBuilder]: At program point L208(lines 106 520) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,090 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 497) no Hoare annotation was computed. [2021-10-13 07:18:53,090 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 508) no Hoare annotation was computed. [2021-10-13 07:18:53,090 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 519) no Hoare annotation was computed. [2021-10-13 07:18:53,091 INFO L853 garLoopResultBuilder]: At program point L176(lines 172 498) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,091 INFO L857 garLoopResultBuilder]: For program point L474(lines 474 476) no Hoare annotation was computed. [2021-10-13 07:18:53,091 INFO L857 garLoopResultBuilder]: For program point L474-2(lines 474 476) no Hoare annotation was computed. [2021-10-13 07:18:53,091 INFO L860 garLoopResultBuilder]: At program point L541(lines 99 542) the Hoare annotation is: true [2021-10-13 07:18:53,091 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 496) no Hoare annotation was computed. [2021-10-13 07:18:53,091 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 507) no Hoare annotation was computed. [2021-10-13 07:18:53,091 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 518) no Hoare annotation was computed. [2021-10-13 07:18:53,091 INFO L853 garLoopResultBuilder]: At program point L146(lines 142 508) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 215) no Hoare annotation was computed. [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L213-2(lines 213 215) no Hoare annotation was computed. [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 495) no Hoare annotation was computed. [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 506) no Hoare annotation was computed. [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 517) no Hoare annotation was computed. [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L479(lines 479 481) no Hoare annotation was computed. [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L446(lines 446 457) no Hoare annotation was computed. [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L413(lines 413 427) no Hoare annotation was computed. [2021-10-13 07:18:53,092 INFO L857 garLoopResultBuilder]: For program point L413-1(lines 413 427) no Hoare annotation was computed. [2021-10-13 07:18:53,093 INFO L857 garLoopResultBuilder]: For program point L446-2(lines 446 457) no Hoare annotation was computed. [2021-10-13 07:18:53,093 INFO L857 garLoopResultBuilder]: For program point L314(lines 314 317) no Hoare annotation was computed. [2021-10-13 07:18:53,093 INFO L853 garLoopResultBuilder]: At program point L182(lines 178 496) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse5 .cse6 .cse7 .cse8))) [2021-10-13 07:18:53,093 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 548) no Hoare annotation was computed. [2021-10-13 07:18:53,093 INFO L857 garLoopResultBuilder]: For program point L546-2(lines 546 548) no Hoare annotation was computed. [2021-10-13 07:18:53,093 INFO L857 garLoopResultBuilder]: For program point L349(lines 349 351) no Hoare annotation was computed. [2021-10-13 07:18:53,093 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 494) no Hoare annotation was computed. [2021-10-13 07:18:53,093 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 505) no Hoare annotation was computed. [2021-10-13 07:18:53,094 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 516) no Hoare annotation was computed. [2021-10-13 07:18:53,094 INFO L857 garLoopResultBuilder]: For program point L383(lines 383 385) no Hoare annotation was computed. [2021-10-13 07:18:53,094 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:18:53,094 INFO L857 garLoopResultBuilder]: For program point L284(lines 284 298) no Hoare annotation was computed. [2021-10-13 07:18:53,094 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 221) no Hoare annotation was computed. [2021-10-13 07:18:53,094 INFO L857 garLoopResultBuilder]: For program point L284-2(lines 284 298) no Hoare annotation was computed. [2021-10-13 07:18:53,095 INFO L853 garLoopResultBuilder]: At program point L152(lines 148 506) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,095 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 92) no Hoare annotation was computed. [2021-10-13 07:18:53,095 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-13 07:18:53,095 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 254) no Hoare annotation was computed. [2021-10-13 07:18:53,096 INFO L857 garLoopResultBuilder]: For program point L252-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 07:18:53,096 INFO L857 garLoopResultBuilder]: For program point L451(lines 451 454) no Hoare annotation was computed. [2021-10-13 07:18:53,096 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 493) no Hoare annotation was computed. [2021-10-13 07:18:53,096 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 504) no Hoare annotation was computed. [2021-10-13 07:18:53,096 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 515) no Hoare annotation was computed. [2021-10-13 07:18:53,096 INFO L860 garLoopResultBuilder]: At program point L551(lines 12 553) the Hoare annotation is: true [2021-10-13 07:18:53,096 INFO L853 garLoopResultBuilder]: At program point L188(lines 184 494) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))))) (or (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse5 .cse6 .cse7 .cse8))) [2021-10-13 07:18:53,096 INFO L853 garLoopResultBuilder]: At program point L122(lines 118 516) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,096 INFO L857 garLoopResultBuilder]: For program point L89(lines 89 91) no Hoare annotation was computed. [2021-10-13 07:18:53,097 INFO L857 garLoopResultBuilder]: For program point L89-2(lines 86 92) no Hoare annotation was computed. [2021-10-13 07:18:53,097 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 294) no Hoare annotation was computed. [2021-10-13 07:18:53,097 INFO L853 garLoopResultBuilder]: At program point L487(lines 100 540) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4560 32))) (.cse6 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv3 32))) (.cse3 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32))) (.cse7 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32))) (.cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse2 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse8 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4512 32))) (.cse5 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse9 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4528 32)))) (or (and (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)) (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse4) (and .cse0 (= (_ bv4464 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse1 .cse2) (and .cse0 .cse1 (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse2) (and .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)) .cse2) (and .cse0 .cse2 .cse6 (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4400 32)))) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) .cse5 .cse7) (and .cse5 .cse8) (and .cse0 .cse1 .cse2 (= (_ bv4480 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse5 .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4448 32)) .cse2) (and .cse5 .cse1 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse7) (and (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (and .cse0 .cse1 .cse9 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4496 32)) .cse1 .cse2) (and .cse0 .cse1 .cse2 .cse8) (and .cse5 .cse9))) [2021-10-13 07:18:53,097 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 324) no Hoare annotation was computed. [2021-10-13 07:18:53,097 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:18:53,097 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 492) no Hoare annotation was computed. [2021-10-13 07:18:53,097 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 503) no Hoare annotation was computed. [2021-10-13 07:18:53,097 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 514) no Hoare annotation was computed. [2021-10-13 07:18:53,098 INFO L857 garLoopResultBuilder]: For program point L389(lines 389 393) no Hoare annotation was computed. [2021-10-13 07:18:53,098 INFO L853 garLoopResultBuilder]: At program point L323(lines 77 552) the Hoare annotation is: false [2021-10-13 07:18:53,098 INFO L857 garLoopResultBuilder]: For program point L389-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 07:18:53,098 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 235) no Hoare annotation was computed. [2021-10-13 07:18:53,098 INFO L857 garLoopResultBuilder]: For program point L224-2(lines 203 486) no Hoare annotation was computed. [2021-10-13 07:18:53,098 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 538) no Hoare annotation was computed. [2021-10-13 07:18:53,098 INFO L857 garLoopResultBuilder]: For program point L291(lines 291 293) no Hoare annotation was computed. [2021-10-13 07:18:53,098 INFO L857 garLoopResultBuilder]: For program point L291-2(lines 286 298) no Hoare annotation was computed. [2021-10-13 07:18:53,099 INFO L857 garLoopResultBuilder]: For program point L523(lines 523 537) no Hoare annotation was computed. [2021-10-13 07:18:53,099 INFO L857 garLoopResultBuilder]: For program point L358(lines 358 360) no Hoare annotation was computed. [2021-10-13 07:18:53,099 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 327) no Hoare annotation was computed. [2021-10-13 07:18:53,099 INFO L857 garLoopResultBuilder]: For program point L226(lines 226 229) no Hoare annotation was computed. [2021-10-13 07:18:53,099 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 491) no Hoare annotation was computed. [2021-10-13 07:18:53,099 INFO L857 garLoopResultBuilder]: For program point L160(lines 160 502) no Hoare annotation was computed. [2021-10-13 07:18:53,099 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 513) no Hoare annotation was computed. [2021-10-13 07:18:53,099 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 98) no Hoare annotation was computed. [2021-10-13 07:18:53,100 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:18:53,100 INFO L857 garLoopResultBuilder]: For program point L524(lines 524 529) no Hoare annotation was computed. [2021-10-13 07:18:53,100 INFO L857 garLoopResultBuilder]: For program point L524-2(lines 523 537) no Hoare annotation was computed. [2021-10-13 07:18:53,100 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 262) no Hoare annotation was computed. [2021-10-13 07:18:53,100 INFO L853 garLoopResultBuilder]: At program point L194(lines 190 492) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32))))) (or (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse5 .cse6 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse7 .cse8) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2021-10-13 07:18:53,100 INFO L853 garLoopResultBuilder]: At program point L128(lines 124 514) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,100 INFO L857 garLoopResultBuilder]: For program point L95(lines 95 97) no Hoare annotation was computed. [2021-10-13 07:18:53,100 INFO L857 garLoopResultBuilder]: For program point L526(lines 526 528) no Hoare annotation was computed. [2021-10-13 07:18:53,100 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 490) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 501) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 512) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L857 garLoopResultBuilder]: For program point L362(lines 362 367) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L857 garLoopResultBuilder]: For program point L362-2(lines 362 367) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L857 garLoopResultBuilder]: For program point L230(lines 230 233) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L853 garLoopResultBuilder]: At program point L197(lines 196 490) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32)))) (or (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse0) (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse0))) [2021-10-13 07:18:53,101 INFO L853 garLoopResultBuilder]: At program point L164(lines 154 504) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4401 32)))) [2021-10-13 07:18:53,101 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 550) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L857 garLoopResultBuilder]: For program point L462-1(lines 462 464) no Hoare annotation was computed. [2021-10-13 07:18:53,101 INFO L860 garLoopResultBuilder]: At program point L562(lines 554 564) the Hoare annotation is: true [2021-10-13 07:18:53,102 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 489) no Hoare annotation was computed. [2021-10-13 07:18:53,102 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 500) no Hoare annotation was computed. [2021-10-13 07:18:53,102 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 511) no Hoare annotation was computed. [2021-10-13 07:18:53,102 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 77 552) no Hoare annotation was computed. [2021-10-13 07:18:53,102 INFO L857 garLoopResultBuilder]: For program point L398(lines 398 401) no Hoare annotation was computed. [2021-10-13 07:18:53,102 INFO L860 garLoopResultBuilder]: At program point L200(lines 199 489) the Hoare annotation is: true [2021-10-13 07:18:53,102 INFO L853 garLoopResultBuilder]: At program point L134(lines 130 512) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:18:53,102 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 07:18:53,106 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:18:53,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:18:53 BoogieIcfgContainer [2021-10-13 07:18:53,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:18:53,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:18:53,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:18:53,159 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:18:53,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:35" (3/4) ... [2021-10-13 07:18:53,162 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:18:53,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:18:53,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:18:53,200 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:18:53,201 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:18:53,302 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:18:53,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:18:53,304 INFO L168 Benchmark]: Toolchain (without parser) took 79442.91 ms. Allocated memory was 65.0 MB in the beginning and 557.8 MB in the end (delta: 492.8 MB). Free memory was 45.8 MB in the beginning and 196.6 MB in the end (delta: -150.8 MB). Peak memory consumption was 341.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:53,305 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory was 44.8 MB in the beginning and 44.7 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:18:53,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.85 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 44.9 MB in the end (delta: 650.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:53,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.77 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 42.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:53,306 INFO L168 Benchmark]: Boogie Preprocessor took 48.35 ms. Allocated memory is still 65.0 MB. Free memory was 42.2 MB in the beginning and 40.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:53,306 INFO L168 Benchmark]: RCFGBuilder took 994.38 ms. Allocated memory is still 65.0 MB. Free memory was 39.9 MB in the beginning and 35.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:53,306 INFO L168 Benchmark]: TraceAbstraction took 77533.10 ms. Allocated memory was 65.0 MB in the beginning and 557.8 MB in the end (delta: 492.8 MB). Free memory was 34.5 MB in the beginning and 206.1 MB in the end (delta: -171.6 MB). Peak memory consumption was 434.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:53,307 INFO L168 Benchmark]: Witness Printer took 144.29 ms. Allocated memory is still 557.8 MB. Free memory was 206.1 MB in the beginning and 196.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:18:53,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory was 44.8 MB in the beginning and 44.7 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 610.85 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 44.9 MB in the end (delta: 650.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.77 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 42.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.35 ms. Allocated memory is still 65.0 MB. Free memory was 42.2 MB in the beginning and 40.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 994.38 ms. Allocated memory is still 65.0 MB. Free memory was 39.9 MB in the beginning and 35.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 77533.10 ms. Allocated memory was 65.0 MB in the beginning and 557.8 MB in the end (delta: 492.8 MB). Free memory was 34.5 MB in the beginning and 206.1 MB in the end (delta: -171.6 MB). Peak memory consumption was 434.7 MB. Max. memory is 16.1 GB. * Witness Printer took 144.29 ms. Allocated memory is still 557.8 MB. Free memory was 206.1 MB in the beginning and 196.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 550]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77385.1ms, OverallIterations: 23, TraceHistogramMax: 18, EmptinessCheckTime: 237.5ms, AutomataDifference: 6303.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4226.7ms, InitialAbstractionConstructionTime: 20.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4007 SDtfs, 3218 SDslu, 3420 SDs, 0 SdLazy, 3174 SolverSat, 650 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3007.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12168 GetRequests, 12121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9243occurred in iteration=21, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2389.7ms AutomataMinimizationTime, 23 MinimizatonAttempts, 5553 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 22 LocationsWithAnnotation, 22 PreInvPairs, 244 NumberOfFragments, 973 HoareAnnotationTreeSize, 22 FomulaSimplifications, 17528 FormulaSimplificationTreeSizeReduction, 1439.2ms HoareSimplificationTime, 22 FomulaSimplificationsInter, 9370 FormulaSimplificationTreeSizeReductionInter, 2771.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 570.1ms SsaConstructionTime, 2131.3ms SatisfiabilityAnalysisTime, 28671.8ms InterpolantComputationTime, 6105 NumberOfCodeBlocks, 6105 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 12156 ConstructedInterpolants, 0 QuantifiedInterpolants, 16109 SizeOfPredicates, 9 NumberOfNonLiveVariables, 7670 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 54 InterpolantComputations, 42 PerfectInterpolantSequences, 45058/45232 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0bv32 == blastFlag && s__state == 12292bv32 - InvariantResult [Line: 201]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: (((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 77]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: (((((((!(s__state == 4368bv32) && !(4432bv32 == s__state)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && 1bv32 == blastFlag) && !(s__state == 16384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: ((((((((!(s__state == 4368bv32) && 0bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 196]: Loop Invariant Derived loop invariant: ((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && s__state == 4352bv32) || ((((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32) - InvariantResult [Line: 172]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 190]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) || (((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 554]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((((((((((((((((((s__state == 4368bv32 && 0bv32 == blastFlag) || ((((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4560bv32)) || (2bv32 == blastFlag && s__state == 4560bv32)) || (((!(3bv32 == blastFlag) && 4464bv32 == s__state) && s__hit == 0bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && 4432bv32 == s__state) && !(5bv32 == blastFlag))) || ((s__hit == 0bv32 && s__state == 4416bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && !(5bv32 == blastFlag)) && s__state == 3bv32) && !(s__s3__tmp__next_state___0 == 4400bv32))) || ((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && s__state == 4352bv32)) || (2bv32 == blastFlag && s__state == 4512bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && 4480bv32 == s__state)) || ((2bv32 == blastFlag && s__hit == 0bv32) && s__state == 4400bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__state == 4448bv32) && !(5bv32 == blastFlag))) || ((2bv32 == blastFlag && s__hit == 0bv32) && s__state == 3bv32)) || ((((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32)) || (1bv32 == blastFlag && s__state == 4384bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__state == 4528bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__state == 4496bv32) && s__hit == 0bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__state == 4512bv32)) || (2bv32 == blastFlag && s__state == 4528bv32) - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: (((((((0bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 184]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) || (((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32) - InvariantResult [Line: 178]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) || (((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4384bv32)) && !(s__state == 4401bv32)) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:18:53,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14863b74-09df-467f-af62-4986485345bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...