./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2n_update_all.i --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_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/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_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/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_c736c0ce-0426-4ab0-92ed-92051678ea3c/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 8db9818917d4101818df459d2d32c905a41e37ef ............................................................................................................................................................................................................................................................................................................................................................ 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_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/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_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/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_c736c0ce-0426-4ab0-92ed-92051678ea3c/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 8db9818917d4101818df459d2d32c905a41e37ef ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:50:15,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:50:15,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:50:15,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:50:15,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:50:15,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:50:15,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:50:15,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:50:15,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:50:15,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:50:15,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:50:15,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:50:15,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:50:15,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:50:15,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:50:15,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:50:15,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:50:15,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:50:15,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:50:15,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:50:15,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:50:15,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:50:15,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:50:15,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:50:15,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:50:15,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:50:15,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:50:15,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:50:15,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:50:15,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:50:15,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:50:15,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:50:15,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:50:15,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:50:15,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:50:15,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:50:15,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:50:15,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:50:15,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:50:15,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:50:15,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:50:15,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:50:15,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:50:15,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:50:15,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:50:15,515 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:50:15,515 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:50:15,515 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:50:15,516 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:50:15,516 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:50:15,516 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:50:15,517 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:50:15,518 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:50:15,519 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:50:15,519 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:50:15,519 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:50:15,520 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:50:15,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:50:15,521 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:50:15,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:50:15,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:50:15,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:50:15,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:50:15,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:50:15,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:50:15,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:50:15,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:50:15,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:50:15,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:50:15,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:50:15,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:50:15,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:50:15,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:50:15,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:50:15,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:50:15,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:50:15,528 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:50:15,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:50:15,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:50:15,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:50:15,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:50:15,530 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_c736c0ce-0426-4ab0-92ed-92051678ea3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8db9818917d4101818df459d2d32c905a41e37ef [2021-10-13 07:50:15,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:50:15,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:50:15,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:50:15,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:50:15,961 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:50:15,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-10-13 07:50:16,032 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data/1ff696012/4cff0de3451c4f19a90efdbfb9b78704/FLAG72e300885 [2021-10-13 07:50:16,666 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:50:16,667 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-10-13 07:50:16,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data/1ff696012/4cff0de3451c4f19a90efdbfb9b78704/FLAG72e300885 [2021-10-13 07:50:16,943 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data/1ff696012/4cff0de3451c4f19a90efdbfb9b78704 [2021-10-13 07:50:16,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:50:16,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:50:16,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:50:16,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:50:16,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:50:16,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:16" (1/1) ... [2021-10-13 07:50:16,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1b14c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:16, skipping insertion in model container [2021-10-13 07:50:16,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:16" (1/1) ... [2021-10-13 07:50:16,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:50:17,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:50:17,487 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_c736c0ce-0426-4ab0-92ed-92051678ea3c/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-10-13 07:50:17,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:50:17,511 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:50:17,574 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_c736c0ce-0426-4ab0-92ed-92051678ea3c/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-10-13 07:50:17,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:50:17,618 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:50:17,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17 WrapperNode [2021-10-13 07:50:17,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:50:17,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:50:17,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:50:17,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:50:17,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:50:17,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:50:17,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:50:17,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:50:17,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:50:17,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:50:17,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:50:17,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:50:17,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (1/1) ... [2021-10-13 07:50:17,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:50:17,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:17,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:50:17,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:50:17,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:50:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:50:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:50:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:50:17,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:50:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:50:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:50:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:50:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:50:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:50:18,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:50:18,497 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 07:50:18,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:18 BoogieIcfgContainer [2021-10-13 07:50:18,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:50:18,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:50:18,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:50:18,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:50:18,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:50:16" (1/3) ... [2021-10-13 07:50:18,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3400d137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:18, skipping insertion in model container [2021-10-13 07:50:18,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:17" (2/3) ... [2021-10-13 07:50:18,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3400d137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:18, skipping insertion in model container [2021-10-13 07:50:18,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:18" (3/3) ... [2021-10-13 07:50:18,511 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_update_all.i [2021-10-13 07:50:18,517 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:50:18,517 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:50:18,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:50:18,580 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 07:50:18,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:50:18,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:50:18,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:18,602 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:18,603 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:18,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1020711375, now seen corresponding path program 1 times [2021-10-13 07:50:18,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:50:18,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068137936] [2021-10-13 07:50:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:18,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:50:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:18,833 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 07:50:18,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:50:18,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068137936] [2021-10-13 07:50:18,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068137936] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:18,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:18,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:50:18,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908602841] [2021-10-13 07:50:18,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:50:18,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:50:18,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:50:18,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:18,860 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 07:50:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:18,893 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2021-10-13 07:50:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:50:18,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 07:50:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:18,904 INFO L225 Difference]: With dead ends: 27 [2021-10-13 07:50:18,904 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 07:50:18,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:50:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 07:50:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-13 07:50:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-13 07:50:18,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 7 [2021-10-13 07:50:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:18,942 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-13 07:50:18,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 07:50:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-10-13 07:50:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:50:18,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:18,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:18,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:50:18,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1514154756, now seen corresponding path program 1 times [2021-10-13 07:50:18,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:50:18,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160900754] [2021-10-13 07:50:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:18,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:50:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:19,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:50:19,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160900754] [2021-10-13 07:50:19,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160900754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:50:19,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061447105] [2021-10-13 07:50:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:19,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:19,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:19,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:50:19,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:50:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:19,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:50:19,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:19,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:19,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061447105] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:19,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [224668086] [2021-10-13 07:50:19,332 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:50:19,332 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:50:19,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:50:19,342 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:50:19,342 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:50:19,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:19,381 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:50:19,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:19,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 07:50:19,384 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:50:19,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:19,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-13 07:50:19,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-13 07:50:19,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:50:19,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-13 07:50:19,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:19,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:50:19,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:19,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-13 07:50:19,471 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:50:19,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:50:19,503 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:19,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:19,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-13 07:50:19,509 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:50:19,509 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:110, output treesize:111 [2021-10-13 07:50:19,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:19,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:19,725 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| 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 07:50:19,728 INFO L168 Benchmark]: Toolchain (without parser) took 2777.52 ms. Allocated memory is still 100.7 MB. Free memory was 61.7 MB in the beginning and 41.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:19,729 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 79.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:50:19,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.29 ms. Allocated memory is still 100.7 MB. Free memory was 61.5 MB in the beginning and 68.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:19,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.93 ms. Allocated memory is still 100.7 MB. Free memory was 68.8 MB in the beginning and 66.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:19,731 INFO L168 Benchmark]: Boogie Preprocessor took 38.88 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 65.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:50:19,731 INFO L168 Benchmark]: RCFGBuilder took 759.43 ms. Allocated memory is still 100.7 MB. Free memory was 65.0 MB in the beginning and 47.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:19,732 INFO L168 Benchmark]: TraceAbstraction took 1225.04 ms. Allocated memory is still 100.7 MB. Free memory was 47.0 MB in the beginning and 41.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:19,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 79.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 664.29 ms. Allocated memory is still 100.7 MB. Free memory was 61.5 MB in the beginning and 68.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.93 ms. Allocated memory is still 100.7 MB. Free memory was 68.8 MB in the beginning and 66.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.88 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 65.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 759.43 ms. Allocated memory is still 100.7 MB. Free memory was 65.0 MB in the beginning and 47.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1225.04 ms. Allocated memory is still 100.7 MB. Free memory was 47.0 MB in the beginning and 41.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: 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 07:50:19,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/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 07:50:22,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:50:22,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:50:22,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:50:22,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:50:22,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:50:22,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:50:22,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:50:22,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:50:22,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:50:22,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:50:22,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:50:22,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:50:22,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:50:22,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:50:22,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:50:22,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:50:22,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:50:22,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:50:22,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:50:22,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:50:22,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:50:22,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:50:22,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:50:22,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:50:22,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:50:22,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:50:22,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:50:22,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:50:22,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:50:22,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:50:22,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:50:22,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:50:22,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:50:22,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:50:22,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:50:22,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:50:22,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:50:22,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:50:22,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:50:22,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:50:22,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:50:22,771 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:50:22,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:50:22,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:50:22,773 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:50:22,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:50:22,774 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:50:22,774 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:50:22,775 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:50:22,775 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:50:22,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:50:22,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:50:22,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:50:22,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:50:22,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:50:22,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:50:22,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:50:22,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:50:22,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:50:22,780 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:50:22,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:50:22,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:50:22,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:50:22,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:50:22,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:50:22,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:50:22,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:50:22,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:50:22,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:50:22,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:50:22,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:50:22,784 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:50:22,784 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:50:22,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:50:22,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:50:22,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:50:22,786 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_c736c0ce-0426-4ab0-92ed-92051678ea3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8db9818917d4101818df459d2d32c905a41e37ef [2021-10-13 07:50:23,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:50:23,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:50:23,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:50:23,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:50:23,309 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:50:23,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-10-13 07:50:23,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data/133974e3c/4b262ff15a1841f3a57fcfbbb1009f74/FLAG9891df607 [2021-10-13 07:50:24,195 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:50:24,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-10-13 07:50:24,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data/133974e3c/4b262ff15a1841f3a57fcfbbb1009f74/FLAG9891df607 [2021-10-13 07:50:24,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/data/133974e3c/4b262ff15a1841f3a57fcfbbb1009f74 [2021-10-13 07:50:24,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:50:24,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:50:24,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:50:24,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:50:24,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:50:24,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:24" (1/1) ... [2021-10-13 07:50:24,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e7063e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:24, skipping insertion in model container [2021-10-13 07:50:24,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:24" (1/1) ... [2021-10-13 07:50:24,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:50:24,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:50:25,002 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_c736c0ce-0426-4ab0-92ed-92051678ea3c/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-10-13 07:50:25,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:50:25,042 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:50:25,109 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_c736c0ce-0426-4ab0-92ed-92051678ea3c/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-10-13 07:50:25,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:50:25,150 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:50:25,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25 WrapperNode [2021-10-13 07:50:25,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:50:25,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:50:25,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:50:25,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:50:25,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:50:25,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:50:25,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:50:25,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:50:25,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:50:25,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:50:25,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:50:25,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:50:25,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:50:25,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:25,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:50:25,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:50:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:50:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:50:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:50:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:50:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:50:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:50:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:50:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:50:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:50:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:50:25,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:50:25,796 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 07:50:25,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:25 BoogieIcfgContainer [2021-10-13 07:50:25,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:50:25,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:50:25,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:50:25,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:50:25,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:50:24" (1/3) ... [2021-10-13 07:50:25,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7269e74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:25, skipping insertion in model container [2021-10-13 07:50:25,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25" (2/3) ... [2021-10-13 07:50:25,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7269e74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:25, skipping insertion in model container [2021-10-13 07:50:25,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:25" (3/3) ... [2021-10-13 07:50:25,808 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_update_all.i [2021-10-13 07:50:25,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:50:25,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:50:25,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:50:25,875 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 07:50:25,876 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:50:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:50:25,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:25,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:25,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:25,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:25,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1121238131, now seen corresponding path program 1 times [2021-10-13 07:50:25,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:25,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319071034] [2021-10-13 07:50:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:25,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:25,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:25,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:25,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:50:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:26,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:50:26,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:26,099 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 07:50:26,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:26,144 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 07:50:26,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:26,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319071034] [2021-10-13 07:50:26,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319071034] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:26,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:26,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:50:26,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055569280] [2021-10-13 07:50:26,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:50:26,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:50:26,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:50:26,193 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 07:50:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:26,225 INFO L93 Difference]: Finished difference Result 50 states and 73 transitions. [2021-10-13 07:50:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:50:26,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:50:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:26,238 INFO L225 Difference]: With dead ends: 50 [2021-10-13 07:50:26,239 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 07:50:26,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:50:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 07:50:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-13 07:50:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-13 07:50:26,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-10-13 07:50:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:26,290 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-13 07:50:26,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 07:50:26,291 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-13 07:50:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:50:26,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:26,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:26,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:50:26,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:26,508 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1860179837, now seen corresponding path program 1 times [2021-10-13 07:50:26,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:26,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823578707] [2021-10-13 07:50:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:26,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:26,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:26,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:26,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:50:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:26,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:50:26,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:26,778 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 07:50:26,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:26,845 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 07:50:26,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:26,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823578707] [2021-10-13 07:50:26,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823578707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:26,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:26,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:50:26,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055121913] [2021-10-13 07:50:26,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:26,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:26,854 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:26,894 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-10-13 07:50:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:50:26,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:50:26,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:26,896 INFO L225 Difference]: With dead ends: 43 [2021-10-13 07:50:26,897 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:50:26,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:26,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:50:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 07:50:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 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 07:50:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-13 07:50:26,916 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2021-10-13 07:50:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:26,917 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-13 07:50:26,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-13 07:50:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:50:26,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:26,927 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:26,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:50:27,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:27,141 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:27,141 INFO L82 PathProgramCache]: Analyzing trace with hash -650193283, now seen corresponding path program 1 times [2021-10-13 07:50:27,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:27,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259240037] [2021-10-13 07:50:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:27,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:27,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:27,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:27,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:50:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:27,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:50:27,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:50:27,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:50:27,567 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:27,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259240037] [2021-10-13 07:50:27,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259240037] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:27,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:27,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:50:27,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864472875] [2021-10-13 07:50:27,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:50:27,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:27,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:50:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:50:27,570 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 07:50:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:27,633 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-10-13 07:50:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:50:27,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 23 [2021-10-13 07:50:27,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:27,636 INFO L225 Difference]: With dead ends: 51 [2021-10-13 07:50:27,636 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 07:50:27,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:50:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 07:50:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-10-13 07:50:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 32 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 07:50:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-10-13 07:50:27,645 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2021-10-13 07:50:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:27,645 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-10-13 07:50:27,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 07:50:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-10-13 07:50:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:50:27,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:27,648 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:27,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:27,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:27,863 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:27,864 INFO L82 PathProgramCache]: Analyzing trace with hash 218280017, now seen corresponding path program 1 times [2021-10-13 07:50:27,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:27,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435061685] [2021-10-13 07:50:27,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:27,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:27,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:27,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:27,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:50:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:28,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:50:28,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:50:28,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:50:28,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:28,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435061685] [2021-10-13 07:50:28,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435061685] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:28,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [795155734] [2021-10-13 07:50:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:28,298 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:50:28,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:50:28,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:50:28,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:50:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:28,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:50:28,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:50:28,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:50:28,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [795155734] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:28,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018623231] [2021-10-13 07:50:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:28,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:28,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:28,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:50:28,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:50:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:29,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:50:29,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:50:29,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:50:29,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018623231] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:29,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:50:29,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-13 07:50:29,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856505069] [2021-10-13 07:50:29,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:50:29,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:50:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:50:29,336 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:29,514 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2021-10-13 07:50:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:50:29,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 07:50:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:29,517 INFO L225 Difference]: With dead ends: 70 [2021-10-13 07:50:29,517 INFO L226 Difference]: Without dead ends: 57 [2021-10-13 07:50:29,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:50:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-13 07:50:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2021-10-13 07:50:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 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 07:50:29,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-10-13 07:50:29,530 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 31 [2021-10-13 07:50:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:29,530 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-10-13 07:50:29,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-10-13 07:50:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:50:29,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:29,532 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:29,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:29,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-13 07:50:29,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:30,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:30,147 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:30,147 INFO L82 PathProgramCache]: Analyzing trace with hash 343591370, now seen corresponding path program 1 times [2021-10-13 07:50:30,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:30,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101258524] [2021-10-13 07:50:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:30,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:30,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:30,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:50:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:30,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 07:50:30,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:30,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:50:30,630 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:50:30,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-13 07:50:30,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-13 07:50:31,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-13 07:50:31,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:50:31,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:50:31,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-10-13 07:50:31,470 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 07:50:31,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 07:50:31,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:50:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:31,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:34,027 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (ULTIMATE.start_sll_update_at_~head.offset (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (store |c_#memory_int| c_ULTIMATE.start_sll_update_at_~head.base (store (select |c_#memory_int| c_ULTIMATE.start_sll_update_at_~head.base) ULTIMATE.start_sll_update_at_~head.offset ULTIMATE.start_sll_update_at_~data)) c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) is different from false [2021-10-13 07:50:41,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 106 [2021-10-13 07:50:41,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:41,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-13 07:50:42,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-10-13 07:50:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-13 07:50:42,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:42,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101258524] [2021-10-13 07:50:42,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101258524] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:42,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [957612885] [2021-10-13 07:50:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:42,859 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:50:42,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:50:42,863 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:50:42,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 07:50:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:43,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 07:50:43,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:43,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:50:43,470 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:50:43,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-13 07:50:43,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-13 07:50:43,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:50:43,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-13 07:50:43,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:50:43,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-10-13 07:50:43,988 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 07:50:43,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 07:50:44,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:50:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:44,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:46,209 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_update_at_~head.offset_19 (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_update_at_~head.base) (bvadd (_ bv4 32) c_ULTIMATE.start_sll_update_at_~head.offset)))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) v_ULTIMATE.start_sll_update_at_~head.offset_19 ULTIMATE.start_sll_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) is different from false [2021-10-13 07:50:48,228 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_update_at_~head.offset_19 (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~s~0.offset)))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) v_ULTIMATE.start_sll_update_at_~head.offset_19 ULTIMATE.start_sll_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) is different from false [2021-10-13 07:50:48,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 106 [2021-10-13 07:50:48,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:48,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-13 07:50:48,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-10-13 07:50:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-10-13 07:50:48,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [957612885] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:48,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130876767] [2021-10-13 07:50:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:48,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:48,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:48,711 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:50:48,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 07:50:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:49,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 07:50:49,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:49,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:50:49,120 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:50:49,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-13 07:50:49,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-13 07:50:49,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:50:49,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-13 07:50:49,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:50:49,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-10-13 07:50:49,532 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 07:50:49,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 07:50:49,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:50:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:49,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:53,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 202 [2021-10-13 07:50:53,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:53,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-13 07:50:54,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-10-13 07:50:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-13 07:50:54,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130876767] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:50:54,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:50:54,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20, 19, 20, 19] total 39 [2021-10-13 07:50:54,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099784424] [2021-10-13 07:50:54,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-13 07:50:54,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:54,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-13 07:50:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1150, Unknown=5, NotChecked=210, Total=1482 [2021-10-13 07:50:54,306 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 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 07:51:23,132 WARN L207 SmtUtils]: Spent 6.92 s on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-10-13 07:51:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:32,701 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2021-10-13 07:51:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 07:51:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 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 32 [2021-10-13 07:51:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:32,709 INFO L225 Difference]: With dead ends: 98 [2021-10-13 07:51:32,709 INFO L226 Difference]: Without dead ends: 96 [2021-10-13 07:51:32,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 145 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 31540.1ms TimeCoverageRelationStatistics Valid=371, Invalid=2392, Unknown=5, NotChecked=312, Total=3080 [2021-10-13 07:51:32,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-13 07:51:32,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 49. [2021-10-13 07:51:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 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 07:51:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-10-13 07:51:32,723 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 32 [2021-10-13 07:51:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:32,724 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-10-13 07:51:32,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 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 07:51:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-10-13 07:51:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:51:32,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:32,726 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:32,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:32,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:33,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 07:51:33,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:33,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:33,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2113051981, now seen corresponding path program 1 times [2021-10-13 07:51:33,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:33,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536115686] [2021-10-13 07:51:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:33,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:33,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:33,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:51:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:33,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:51:33,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:51:33,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:51:33,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:33,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536115686] [2021-10-13 07:51:33,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536115686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:33,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:33,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:51:33,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131860377] [2021-10-13 07:51:33,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:51:33,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:51:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:33,799 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 07:51:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:33,858 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-10-13 07:51:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:51:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 33 [2021-10-13 07:51:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:33,860 INFO L225 Difference]: With dead ends: 66 [2021-10-13 07:51:33,860 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 07:51:33,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:51:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 07:51:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-10-13 07:51:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 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 07:51:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-10-13 07:51:33,886 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 33 [2021-10-13 07:51:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:33,886 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-10-13 07:51:33,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 07:51:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-10-13 07:51:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:51:33,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:33,890 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:33,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:34,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:34,110 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:34,111 INFO L82 PathProgramCache]: Analyzing trace with hash -66723983, now seen corresponding path program 2 times [2021-10-13 07:51:34,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:34,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414730274] [2021-10-13 07:51:34,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:51:34,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:34,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:34,112 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:34,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:51:34,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:51:34,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:51:34,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:51:34,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:51:34,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:51:34,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:34,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414730274] [2021-10-13 07:51:34,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414730274] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:34,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [479084431] [2021-10-13 07:51:34,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:51:34,651 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:34,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:51:34,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:51:34,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-13 07:51:35,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:51:35,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:51:35,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:51:35,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:51:35,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:51:35,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [479084431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:35,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129503227] [2021-10-13 07:51:35,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:51:35,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:35,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:35,356 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:35,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 07:51:35,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:51:35,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:51:35,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:51:35,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:51:35,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:51:36,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129503227] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:36,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:51:36,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 15 [2021-10-13 07:51:36,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263580810] [2021-10-13 07:51:36,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 07:51:36,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:36,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 07:51:36,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:51:36,014 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:36,756 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2021-10-13 07:51:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 07:51:36,757 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-13 07:51:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:36,758 INFO L225 Difference]: With dead ends: 143 [2021-10-13 07:51:36,758 INFO L226 Difference]: Without dead ends: 123 [2021-10-13 07:51:36,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 640.9ms TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2021-10-13 07:51:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-13 07:51:36,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 55. [2021-10-13 07:51:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 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 07:51:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-13 07:51:36,771 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 33 [2021-10-13 07:51:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:36,772 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-13 07:51:36,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:36,772 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-10-13 07:51:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 07:51:36,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:36,773 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:51:36,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:36,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:37,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:37,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:37,383 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:37,384 INFO L82 PathProgramCache]: Analyzing trace with hash 655990325, now seen corresponding path program 1 times [2021-10-13 07:51:37,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:37,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688668392] [2021-10-13 07:51:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:37,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:37,386 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:37,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:51:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:37,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:51:37,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:51:37,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:51:37,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:37,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688668392] [2021-10-13 07:51:37,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688668392] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:37,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [453999953] [2021-10-13 07:51:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:37,909 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:37,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:51:37,911 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:51:37,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-13 07:51:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:38,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:51:38,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:51:38,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:51:38,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [453999953] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:38,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968919123] [2021-10-13 07:51:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:38,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:38,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:38,566 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:38,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 07:51:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:38,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:51:38,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:51:39,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:51:39,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968919123] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:39,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:51:39,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-13 07:51:39,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785737785] [2021-10-13 07:51:39,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:51:39,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:39,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:51:39,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:51:39,134 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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 07:51:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:39,297 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2021-10-13 07:51:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:51:39,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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 38 [2021-10-13 07:51:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:39,299 INFO L225 Difference]: With dead ends: 80 [2021-10-13 07:51:39,299 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 07:51:39,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.0ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:51:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 07:51:39,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2021-10-13 07:51:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 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 07:51:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-10-13 07:51:39,327 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 38 [2021-10-13 07:51:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:39,327 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-10-13 07:51:39,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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 07:51:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-10-13 07:51:39,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 07:51:39,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:39,328 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:39,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:39,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:39,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:39,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:39,929 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:39,929 INFO L82 PathProgramCache]: Analyzing trace with hash -137671404, now seen corresponding path program 3 times [2021-10-13 07:51:39,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:39,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713315245] [2021-10-13 07:51:39,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:51:39,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:39,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:39,936 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:39,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:51:40,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 07:51:40,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:51:40,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:51:40,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:51:40,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:51:40,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:40,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713315245] [2021-10-13 07:51:40,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713315245] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:40,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1007146272] [2021-10-13 07:51:40,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:51:40,749 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:40,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:51:40,755 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:51:40,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 07:51:41,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 07:51:41,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:51:41,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:51:41,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:51:41,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:51:41,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1007146272] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:41,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608272295] [2021-10-13 07:51:41,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:51:41,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:41,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:41,701 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:41,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 07:51:43,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 07:51:43,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:51:43,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:51:43,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:51:43,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 07:51:43,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608272295] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:43,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:51:43,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 9] total 17 [2021-10-13 07:51:43,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529477493] [2021-10-13 07:51:43,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 07:51:43,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:43,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 07:51:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:51:43,895 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 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 07:51:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:44,047 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-10-13 07:51:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:51:44,048 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 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 38 [2021-10-13 07:51:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:44,049 INFO L225 Difference]: With dead ends: 67 [2021-10-13 07:51:44,049 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 07:51:44,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 350.3ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:51:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 07:51:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-13 07:51:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 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 07:51:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-13 07:51:44,058 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2021-10-13 07:51:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:44,059 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-13 07:51:44,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 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 07:51:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-10-13 07:51:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:51:44,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:44,061 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:51:44,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:44,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:44,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:44,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:44,683 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:44,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1087482302, now seen corresponding path program 1 times [2021-10-13 07:51:44,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:44,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122651168] [2021-10-13 07:51:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:44,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:44,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:44,685 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:44,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:51:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:45,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 07:51:45,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:45,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:51:45,353 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:51:45,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-10-13 07:51:45,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-13 07:51:45,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-13 07:51:46,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:51:46,111 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-10-13 07:51:46,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 87 [2021-10-13 07:51:46,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 67 [2021-10-13 07:51:46,140 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-13 07:51:46,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 53 [2021-10-13 07:51:46,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-13 07:51:46,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-13 07:51:46,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:51:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:46,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:47,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 84 [2021-10-13 07:51:47,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:47,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-13 07:51:47,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:47,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-13 07:51:47,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-10-13 07:51:47,688 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:47,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 55 [2021-10-13 07:51:49,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:49,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:51:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:50,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:50,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122651168] [2021-10-13 07:51:50,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122651168] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:50,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [271828718] [2021-10-13 07:51:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:50,394 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:50,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:51:50,395 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:51:50,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-13 07:51:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:51,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 07:51:51,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:51,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:51:51,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-13 07:51:51,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-10-13 07:51:52,366 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-10-13 07:51:52,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 89 [2021-10-13 07:51:52,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 74 [2021-10-13 07:51:52,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:51:52,404 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-10-13 07:51:52,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 55 [2021-10-13 07:51:53,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2021-10-13 07:51:53,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2021-10-13 07:51:54,026 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:51:54,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-10-13 07:51:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:54,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:55,043 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:55,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 133 [2021-10-13 07:51:55,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:55,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-10-13 07:51:55,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:55,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-13 07:51:56,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:56,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-10-13 07:51:56,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 589 treesize of output 499 [2021-10-13 07:51:56,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:51:56,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 545 [2021-10-13 07:51:58,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-10-13 07:51:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:59,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [271828718] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:51:59,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322514353] [2021-10-13 07:51:59,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:59,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:59,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:59,514 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:59,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 07:52:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:00,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 07:52:00,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:00,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:52:00,202 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:52:00,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-13 07:52:00,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-13 07:52:00,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-10-13 07:52:00,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-13 07:52:00,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:52:00,721 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-10-13 07:52:00,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 87 [2021-10-13 07:52:00,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 67 [2021-10-13 07:52:00,759 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-13 07:52:00,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 53 [2021-10-13 07:52:01,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-13 07:52:01,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-13 07:52:01,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:52:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:01,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:02,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 84 [2021-10-13 07:52:02,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:02,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-13 07:52:02,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:02,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-13 07:52:03,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:03,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-13 07:52:03,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:03,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-13 07:52:03,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 388 treesize of output 340 [2021-10-13 07:52:05,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-10-13 07:52:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:05,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322514353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:05,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:52:05,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 26, 26, 22, 22] total 99 [2021-10-13 07:52:05,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812654927] [2021-10-13 07:52:05,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-13 07:52:05,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:52:05,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-13 07:52:05,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=9177, Unknown=0, NotChecked=0, Total=9702 [2021-10-13 07:52:05,988 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 99 states, 99 states have (on average 1.7676767676767677) internal successors, (175), 99 states have internal predecessors, (175), 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 07:52:26,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:26,266 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2021-10-13 07:52:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 07:52:26,267 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.7676767676767677) internal successors, (175), 99 states have internal predecessors, (175), 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 07:52:26,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:26,268 INFO L225 Difference]: With dead ends: 53 [2021-10-13 07:52:26,268 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 07:52:26,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5036 ImplicationChecksByTransitivity, 28153.8ms TimeCoverageRelationStatistics Valid=2275, Invalid=14755, Unknown=0, NotChecked=0, Total=17030 [2021-10-13 07:52:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 07:52:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-13 07:52:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 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 07:52:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-10-13 07:52:26,286 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2021-10-13 07:52:26,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:26,286 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-10-13 07:52:26,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.7676767676767677) internal successors, (175), 99 states have internal predecessors, (175), 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 07:52:26,287 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-10-13 07:52:26,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 07:52:26,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:26,288 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:52:26,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:26,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:26,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:26,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:52:26,904 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:26,904 INFO L82 PathProgramCache]: Analyzing trace with hash 259492002, now seen corresponding path program 2 times [2021-10-13 07:52:26,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:52:26,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099681493] [2021-10-13 07:52:26,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:52:26,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:52:26,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:52:26,906 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:52:26,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:52:27,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:52:27,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:52:27,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:52:27,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:52:27,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:52:27,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:52:27,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099681493] [2021-10-13 07:52:27,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099681493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:27,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [510036197] [2021-10-13 07:52:27,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:52:27,726 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:52:27,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:52:27,726 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:52:27,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-13 07:52:28,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:52:28,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:52:28,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:52:28,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:52:28,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:52:28,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [510036197] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:28,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806663450] [2021-10-13 07:52:28,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:52:28,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:52:28,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:28,775 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:52:28,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 07:52:29,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:52:29,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:52:29,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:52:29,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:52:29,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:52:29,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806663450] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:29,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:52:29,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-10-13 07:52:29,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254362031] [2021-10-13 07:52:29,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:52:29,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:52:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:52:29,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:52:29,771 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:29,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:29,864 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-10-13 07:52:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:52:29,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-13 07:52:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:29,866 INFO L225 Difference]: With dead ends: 42 [2021-10-13 07:52:29,866 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:52:29,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:52:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:52:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:52:29,867 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 07:52:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:52:29,867 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-13 07:52:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:29,867 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:52:29,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:52:29,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:52:29,870 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:52:29,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:30,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:30,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:30,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:52:30,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:52:30,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:30,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:53:52,322 WARN L207 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 138 DAG size of output: 101 [2021-10-13 07:53:57,636 WARN L207 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 124 DAG size of output: 97 [2021-10-13 07:53:57,639 INFO L860 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2021-10-13 07:53:57,639 INFO L857 garLoopResultBuilder]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2021-10-13 07:53:57,639 INFO L853 garLoopResultBuilder]: At program point L622-3(lines 622 627) the Hoare annotation is: (let ((.cse29 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse25 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse30 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse10 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse8 (select .cse25 .cse30)) (.cse24 (= ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse1 (bvsgt ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse26 (select .cse29 .cse30)) (.cse28 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse9 (select .cse29 (_ bv4 32)))) (let ((.cse0 (not (bvsgt ULTIMATE.start_sll_get_data_at_~index (_ bv0 32)))) (.cse2 (not (bvsgt ULTIMATE.start_sll_update_at_~index (_ bv0 32)))) (.cse4 (= .cse9 (_ bv0 32))) (.cse5 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse6 (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0)) (.cse7 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse11 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse12 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse13 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse28) ULTIMATE.start_sll_create_~head~0.base))) (.cse14 (= .cse26 ULTIMATE.start_sll_update_at_~head.offset)) (.cse15 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse28) (_ bv0 32))) (.cse16 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse17 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse18 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse19 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse3 (let ((.cse27 (= ULTIMATE.start_main_~len~0 (_ bv2 32)))) (or (and .cse24 .cse27) (and .cse1 .cse27)))) (.cse20 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse21 (= ULTIMATE.start_sll_update_at_~head.base .cse8)) (.cse22 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset)) (.cse23 (= .cse10 ULTIMATE.start_sll_update_at_~data))) (or (and (= (_ bv2 32) ULTIMATE.start_main_~i~0) .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse7 .cse0 (= (select (select |#memory_int| .cse8) .cse9) .cse10) .cse11 (= ULTIMATE.start_main_~expected~0 |ULTIMATE.start_sll_get_data_at_#res|) .cse12 .cse1 .cse13 .cse14 .cse15 .cse16 .cse17 (= ULTIMATE.start_main_~expected~0 (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset)) .cse2 .cse18 .cse19 .cse3 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32)) .cse20 .cse21 .cse22 .cse23) (and .cse4 .cse5 .cse6 .cse7 .cse11 .cse24 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse3 (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index) .cse20 .cse21 (= (select (select |#memory_int| (select .cse25 (_ bv4 32))) .cse26) .cse10) .cse22 .cse23))))) [2021-10-13 07:53:57,639 INFO L857 garLoopResultBuilder]: For program point L622-4(lines 622 627) no Hoare annotation was computed. [2021-10-13 07:53:57,639 INFO L853 garLoopResultBuilder]: At program point L581(lines 574 582) the Hoare annotation is: (let ((.cse0 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse1 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse2 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse3 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse4 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse5 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (_ bv0 32)) .cse2 .cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1))) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_create_~head~0.base)) .cse4 (not (= ULTIMATE.start_sll_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)) .cse5 (bvsgt ULTIMATE.start_sll_create_~len (_ bv0 32))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_sll_create_~len (_ bv2 32)) .cse5))) [2021-10-13 07:53:57,639 INFO L857 garLoopResultBuilder]: For program point L606(lines 1 632) no Hoare annotation was computed. [2021-10-13 07:53:57,639 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:53:57,639 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:53:57,640 INFO L860 garLoopResultBuilder]: At program point L631(lines 613 632) the Hoare annotation is: true [2021-10-13 07:53:57,640 INFO L853 garLoopResultBuilder]: At program point L590(lines 583 591) the Hoare annotation is: (let ((.cse0 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base)))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32)) (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse0) ULTIMATE.start_sll_create_~head~0.base)) (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse0) (_ bv0 32)) (= ULTIMATE.start_main_~len~0 (_ bv2 32)) (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1))) (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32)) (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)))) (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32)) (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) [2021-10-13 07:53:57,640 INFO L853 garLoopResultBuilder]: At program point L607-2(lines 607 610) the Hoare annotation is: (let ((.cse23 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse18 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse8 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base))) (let ((.cse2 (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse20 (= (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)) ULTIMATE.start_sll_update_at_~data)) (.cse0 (= (select .cse8 (_ bv4 32)) (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse21 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_update_at_~head.offset)) (.cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse4 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse5 (not (= ULTIMATE.start_main_~s~0.base (select .cse18 (_ bv4 32))))) (.cse6 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse7 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse23) ULTIMATE.start_sll_create_~head~0.base))) (.cse10 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse23) (_ bv0 32))) (.cse11 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse12 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse13 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse14 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse15 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse16 (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index)) (.cse22 (= ULTIMATE.start_sll_update_at_~head.base ULTIMATE.start_main_~s~0.base)) (.cse17 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse19 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (let ((.cse9 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= (select .cse8 .cse9) ULTIMATE.start_sll_update_at_~head.offset) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (ULTIMATE.start_sll_update_at_~head.offset (_ BitVec 32))) (= ULTIMATE.start_main_~len~0 (select (select (store |#memory_int| ULTIMATE.start_sll_update_at_~head.base (store (select |#memory_int| ULTIMATE.start_sll_update_at_~head.base) ULTIMATE.start_sll_update_at_~head.offset ULTIMATE.start_sll_update_at_~data)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse17 (= ULTIMATE.start_sll_update_at_~head.base (select .cse18 .cse9)) .cse19 .cse20)) (and .cse0 .cse1 .cse21 (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (= (_ bv1 32) ULTIMATE.start_sll_update_at_~index) .cse22 .cse17 .cse19 .cse20) (and .cse0 .cse1 .cse21 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse6 .cse7 .cse10 .cse11 .cse12 .cse13 (= ULTIMATE.start_main_~len~0 ULTIMATE.start_sll_update_at_~data) .cse14 .cse15 .cse16 .cse22 .cse17 .cse19)))) [2021-10-13 07:53:57,640 INFO L857 garLoopResultBuilder]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2021-10-13 07:53:57,641 INFO L857 garLoopResultBuilder]: For program point L624(lines 624 626) no Hoare annotation was computed. [2021-10-13 07:53:57,641 INFO L853 garLoopResultBuilder]: At program point L600-2(lines 600 603) the Hoare annotation is: (let ((.cse26 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse35 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse36 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse12 (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base)) (.cse27 (select .cse35 .cse36)) (.cse33 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse32 (select .cse26 .cse36)) (.cse28 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse34 (select .cse35 (_ bv4 32)))) (let ((.cse20 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32))) (.cse1 (= .cse34 (_ bv0 32))) (.cse2 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse3 (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0)) (.cse4 (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse5 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse6 (= (select (select |#memory_int| .cse32) .cse34) .cse28)) (.cse7 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse8 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse9 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse33) ULTIMATE.start_sll_create_~head~0.base))) (.cse10 (= .cse27 ULTIMATE.start_sll_update_at_~head.offset)) (.cse11 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse33) (_ bv0 32))) (.cse13 (= ULTIMATE.start_sll_get_data_at_~head.offset (_ bv0 32))) (.cse14 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse15 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse16 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse17 (not (bvsgt ULTIMATE.start_sll_update_at_~index (_ bv0 32)))) (.cse18 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse19 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse21 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse22 (= ULTIMATE.start_sll_update_at_~head.base .cse32)) (.cse23 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset)) (.cse24 (= .cse28 ULTIMATE.start_sll_update_at_~data)) (.cse25 (select .cse12 (_ bv0 32)))) (or (and (exists ((v_ULTIMATE.start_sll_get_data_at_~head.base_33 (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv1 32) (select (select |#memory_int| v_ULTIMATE.start_sll_get_data_at_~head.base_33) (_ bv0 32))))) (and (= ULTIMATE.start_main_~expected~0 .cse0) (= (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset) .cse0)))) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (= (_ bv3 32) (select .cse12 ULTIMATE.start_sll_get_data_at_~head.offset)) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse1 .cse5 .cse7 .cse8 .cse9 (= ULTIMATE.start_sll_get_data_at_~head.base ULTIMATE.start_main_~s~0.base) .cse10 .cse11 .cse13 .cse14 (= ULTIMATE.start_main_~expected~0 (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_get_data_at_~head.offset) .cse15 .cse16 (= ULTIMATE.start_main_~expected~0 (_ bv2 32)) .cse18 .cse19 .cse20 (= (_ bv2 32) .cse25) (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index) .cse21 .cse22 (= (select (select |#memory_int| (select .cse26 (_ bv4 32))) .cse27) .cse28) .cse23 .cse24) (let ((.cse31 (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_get_data_at_~head.base) (_ bv4 32)))) (let ((.cse29 (bvadd .cse25 (_ bv1 32))) (.cse30 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_get_data_at_~head.base) (_ bv4 32))) .cse31))) (and .cse1 (= ULTIMATE.start_sll_get_data_at_~index (_ bv1 32)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= .cse29 .cse30) (= .cse29 ULTIMATE.start_main_~expected~0) .cse9 .cse10 .cse11 (= .cse31 (_ bv0 32)) .cse13 .cse14 (= (_ bv3 32) .cse30) .cse15 .cse16 .cse17 .cse18 .cse19 .cse21 .cse22 .cse23 .cse24))))))) [2021-10-13 07:53:57,641 INFO L857 garLoopResultBuilder]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2021-10-13 07:53:57,642 INFO L853 garLoopResultBuilder]: At program point L625(lines 613 632) the Hoare annotation is: false [2021-10-13 07:53:57,642 INFO L857 garLoopResultBuilder]: For program point L592(lines 592 598) no Hoare annotation was computed. [2021-10-13 07:53:57,642 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2021-10-13 07:53:57,642 INFO L857 garLoopResultBuilder]: For program point L576-1(lines 576 578) no Hoare annotation was computed. [2021-10-13 07:53:57,642 INFO L860 garLoopResultBuilder]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2021-10-13 07:53:57,642 INFO L853 garLoopResultBuilder]: At program point L618-2(lines 618 621) the Hoare annotation is: (let ((.cse18 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base))) (let ((.cse23 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse22 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse20 (select .cse18 (_ bv4 32)))) (let ((.cse4 (not (= ULTIMATE.start_main_~s~0.base .cse20))) (.cse0 (= (select .cse22 (_ bv4 32)) (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse2 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse3 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse5 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse6 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse23) ULTIMATE.start_sll_create_~head~0.base))) (.cse7 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse23) (_ bv0 32))) (.cse8 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse9 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse10 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse11 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse12 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse16 (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index)) (.cse13 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse14 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse2 .cse3 .cse4 .cse5 .cse6 (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_update_at_~head.offset_14 (_ BitVec 32))) (= (select (select (let ((.cse15 (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_update_at_~head.offset)))) (store |#memory_int| .cse15 (store (select |#memory_int| .cse15) v_ULTIMATE.start_sll_update_at_~head.offset_14 ULTIMATE.start_sll_update_at_~data))) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0)) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse16 .cse13 .cse14) (let ((.cse19 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse17 (select .cse22 .cse19)) (.cse21 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)))) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_main_~i~0) (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0) .cse2 .cse3 .cse5 .cse6 (= .cse17 ULTIMATE.start_sll_update_at_~head.offset) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse16 .cse13 (= ULTIMATE.start_sll_update_at_~head.base (select .cse18 .cse19)) (= (select (select |#memory_int| .cse20) .cse17) .cse21) .cse14 (= .cse21 ULTIMATE.start_sll_update_at_~data)))))))) [2021-10-13 07:53:57,643 INFO L857 garLoopResultBuilder]: For program point L585-2(lines 585 589) no Hoare annotation was computed. [2021-10-13 07:53:57,643 INFO L857 garLoopResultBuilder]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2021-10-13 07:53:57,643 INFO L853 garLoopResultBuilder]: At program point L585-3(lines 585 589) the Hoare annotation is: (let ((.cse8 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset))) (let ((.cse0 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse1 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse2 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse8) (_ bv0 32))) (.cse3 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse4 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse5 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse6 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse7 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (bvsgt ULTIMATE.start_sll_create_~len (_ bv0 32))) (and .cse3 .cse6 (= ULTIMATE.start_sll_create_~len (_ bv2 32))) (and .cse0 .cse1 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse8) ULTIMATE.start_sll_create_~head~0.base)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7)))) [2021-10-13 07:53:57,643 INFO L857 garLoopResultBuilder]: For program point L585-4(lines 585 589) no Hoare annotation was computed. [2021-10-13 07:53:57,643 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:53:57,643 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2021-10-13 07:53:57,643 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:53:57,644 INFO L853 garLoopResultBuilder]: At program point L604(lines 599 605) the Hoare annotation is: (let ((.cse23 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse20 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse24 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse4 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse2 (select .cse20 .cse24)) (.cse21 (select .cse23 .cse24)) (.cse22 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse3 (select .cse23 (_ bv4 32)))) (let ((.cse0 (= .cse3 (_ bv0 32))) (.cse1 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse5 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse6 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse7 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse22) ULTIMATE.start_sll_create_~head~0.base))) (.cse8 (= .cse21 ULTIMATE.start_sll_update_at_~head.offset)) (.cse9 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse22) (_ bv0 32))) (.cse11 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse12 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse13 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse14 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse15 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse10 (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base)) (.cse16 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse17 (= ULTIMATE.start_sll_update_at_~head.base .cse2)) (.cse18 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset)) (.cse19 (= .cse4 ULTIMATE.start_sll_update_at_~data))) (or (and .cse0 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32)) (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0) (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse1 (not (bvsgt ULTIMATE.start_sll_get_data_at_~index (_ bv0 32))) (= (select (select |#memory_int| .cse2) .cse3) .cse4) (= ULTIMATE.start_main_~expected~0 (_ bv3 32)) .cse5 .cse6 .cse7 .cse8 (= (_ bv3 32) |ULTIMATE.start_sll_get_data_at_#res|) .cse9 (= (_ bv3 32) (select .cse10 ULTIMATE.start_sll_get_data_at_~head.offset)) .cse11 .cse12 .cse13 (not (bvsgt ULTIMATE.start_sll_update_at_~index (_ bv0 32))) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse0 .cse1 .cse5 .cse6 .cse7 (= ULTIMATE.start_sll_get_data_at_~head.base ULTIMATE.start_main_~s~0.base) .cse8 .cse9 (= ULTIMATE.start_sll_get_data_at_~head.offset (_ bv0 32)) .cse11 (= ULTIMATE.start_main_~expected~0 (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_get_data_at_~head.offset) .cse12 .cse13 (= ULTIMATE.start_main_~expected~0 (_ bv2 32)) .cse14 .cse15 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32)) (= (_ bv2 32) (select .cse10 (_ bv0 32))) (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index) (= (_ bv2 32) |ULTIMATE.start_sll_get_data_at_#res|) .cse16 .cse17 (= (select (select |#memory_int| (select .cse20 (_ bv4 32))) .cse21) .cse4) .cse18 .cse19))))) [2021-10-13 07:53:57,648 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:53:57,654 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) 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 07:53:57,657 INFO L168 Benchmark]: Toolchain (without parser) took 213191.06 ms. Allocated memory was 67.1 MB in the beginning and 109.1 MB in the end (delta: 41.9 MB). Free memory was 44.8 MB in the beginning and 59.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 80.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:57,657 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 67.1 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:57,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.29 ms. Allocated memory is still 67.1 MB. Free memory was 44.6 MB in the beginning and 41.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:57,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.95 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 39.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:57,658 INFO L168 Benchmark]: Boogie Preprocessor took 39.60 ms. Allocated memory is still 67.1 MB. Free memory was 39.5 MB in the beginning and 37.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:57,659 INFO L168 Benchmark]: RCFGBuilder took 530.18 ms. Allocated memory is still 67.1 MB. Free memory was 37.7 MB in the beginning and 42.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:57,659 INFO L168 Benchmark]: TraceAbstraction took 211855.79 ms. Allocated memory was 67.1 MB in the beginning and 109.1 MB in the end (delta: 41.9 MB). Free memory was 42.5 MB in the beginning and 59.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 78.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:57,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 67.1 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 682.29 ms. Allocated memory is still 67.1 MB. Free memory was 44.6 MB in the beginning and 41.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.95 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 39.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.60 ms. Allocated memory is still 67.1 MB. Free memory was 39.5 MB in the beginning and 37.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 530.18 ms. Allocated memory is still 67.1 MB. Free memory was 37.7 MB in the beginning and 42.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 211855.79 ms. Allocated memory was 67.1 MB in the beginning and 109.1 MB in the end (delta: 41.9 MB). Free memory was 42.5 MB in the beginning and 59.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 78.4 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: 630]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 211781.8ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 30.4ms, AutomataDifference: 60293.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 87163.2ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 266 SDtfs, 1436 SDslu, 1351 SDs, 0 SdLazy, 2385 SolverSat, 537 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 30724.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1704 GetRequests, 1429 SyntacticMatches, 7 SemanticMatches, 268 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5951 ImplicationChecksByTransitivity, 61006.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=8, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 159.0ms AutomataMinimizationTime, 11 MinimizatonAttempts, 173 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 33 NumberOfFragments, 2255 HoareAnnotationTreeSize, 12 FomulaSimplifications, 93143 FormulaSimplificationTreeSizeReduction, 510.8ms HoareSimplificationTime, 12 FomulaSimplificationsInter, 17574 FormulaSimplificationTreeSizeReductionInter, 86643.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 408.3ms SsaConstructionTime, 3133.6ms SatisfiabilityAnalysisTime, 47330.0ms InterpolantComputationTime, 838 NumberOfCodeBlocks, 835 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1626 ConstructedInterpolants, 66 QuantifiedInterpolants, 9778 SizeOfPredicates, 295 NumberOfNonLiveVariables, 3253 ConjunctsInSsa, 395 ConjunctsInUnsatCore, 50 InterpolantComputations, 8 PerfectInterpolantSequences, 626/952 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: 593]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:53:57,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c736c0ce-0426-4ab0-92ed-92051678ea3c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...