./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs --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 bf89a9db9089e52f60762f5e253ea7c1b22972a3 ..................................................................................................................................................................................................................................................................................................................................................................................................... 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_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs --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 bf89a9db9089e52f60762f5e253ea7c1b22972a3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-5709675 [2021-10-16 03:12:01,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:12:01,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:12:01,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:12:01,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:12:01,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:12:01,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:12:01,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:12:01,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:12:01,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:12:01,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:12:01,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:12:01,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:12:01,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:12:01,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:12:01,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:12:01,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:12:01,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:12:01,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:12:01,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:12:01,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:12:01,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:12:01,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:12:01,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:12:01,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:12:01,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:12:01,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:12:01,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:12:01,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:12:01,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:12:01,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:12:01,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:12:01,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:12:01,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:12:01,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:12:01,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:12:01,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:12:01,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:12:01,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:12:01,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:12:01,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:12:01,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:12:01,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:12:01,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:12:01,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:12:01,561 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:12:01,561 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:12:01,561 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:12:01,562 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:12:01,562 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:12:01,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:12:01,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:12:01,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:12:01,570 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:12:01,570 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:12:01,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:12:01,570 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:12:01,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:12:01,571 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:12:01,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:12:01,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:12:01,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:12:01,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:12:01,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:12:01,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:12:01,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:12:01,573 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:12:01,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:12:01,573 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:12:01,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:12:01,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:12:01,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:12:01,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:01,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:12:01,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:12:01,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:12:01,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:12:01,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:12:01,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:12:01,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:12:01,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:12:01,578 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_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf89a9db9089e52f60762f5e253ea7c1b22972a3 [2021-10-16 03:12:01,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:12:01,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:12:01,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:12:01,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:12:01,878 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:12:01,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i [2021-10-16 03:12:01,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data/b5d6ba9e7/e93cdacdbd0742e3b2c1287d72a99142/FLAG8bafd252a [2021-10-16 03:12:02,563 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:12:02,564 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i [2021-10-16 03:12:02,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data/b5d6ba9e7/e93cdacdbd0742e3b2c1287d72a99142/FLAG8bafd252a [2021-10-16 03:12:02,878 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data/b5d6ba9e7/e93cdacdbd0742e3b2c1287d72a99142 [2021-10-16 03:12:02,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:12:02,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:12:02,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:02,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:12:02,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:12:02,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:02" (1/1) ... [2021-10-16 03:12:02,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2606c47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:02, skipping insertion in model container [2021-10-16 03:12:02,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:02" (1/1) ... [2021-10-16 03:12:02,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:12:02,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:12:03,282 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_4873cdc4-5920-40eb-87fd-283e142bbad1/sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i[24236,24249] [2021-10-16 03:12:03,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:03,294 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:12:03,357 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_4873cdc4-5920-40eb-87fd-283e142bbad1/sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i[24236,24249] [2021-10-16 03:12:03,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:03,393 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:12:03,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03 WrapperNode [2021-10-16 03:12:03,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:03,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:03,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:12:03,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:12:03,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:03,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:12:03,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:12:03,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:12:03,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:12:03,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:12:03,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:12:03,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:12:03,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (1/1) ... [2021-10-16 03:12:03,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:03,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:03,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:12:03,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:12:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:12:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:12:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:12:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:12:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:12:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:12:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:12:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:12:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:12:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:12:04,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:12:04,168 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 03:12:04,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:04 BoogieIcfgContainer [2021-10-16 03:12:04,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:12:04,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:12:04,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:12:04,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:12:04,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:12:02" (1/3) ... [2021-10-16 03:12:04,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749247a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:12:04, skipping insertion in model container [2021-10-16 03:12:04,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:03" (2/3) ... [2021-10-16 03:12:04,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749247a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:12:04, skipping insertion in model container [2021-10-16 03:12:04,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:04" (3/3) ... [2021-10-16 03:12:04,183 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2021-10-16 03:12:04,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:12:04,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:12:04,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:12:04,279 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 [2021-10-16 03:12:04,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:12:04,297 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) [2021-10-16 03:12:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 03:12:04,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:04,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:04,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1020711375, now seen corresponding path program 1 times [2021-10-16 03:12:04,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:04,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757991926] [2021-10-16 03:12:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:04,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:04,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:04,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757991926] [2021-10-16 03:12:04,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757991926] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:04,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:04,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:12:04,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041947901] [2021-10-16 03:12:04,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:12:04,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:12:04,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:12:04,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:12:04,606 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) [2021-10-16 03:12:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:04,640 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2021-10-16 03:12:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:12:04,642 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 [2021-10-16 03:12:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:04,650 INFO L225 Difference]: With dead ends: 27 [2021-10-16 03:12:04,650 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 03:12:04,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:12:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 03:12:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-16 03:12:04,676 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) [2021-10-16 03:12:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-16 03:12:04,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 7 [2021-10-16 03:12:04,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:04,679 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-16 03:12:04,679 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) [2021-10-16 03:12:04,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-10-16 03:12:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:12:04,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:04,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:04,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:12:04,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1514154756, now seen corresponding path program 1 times [2021-10-16 03:12:04,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:04,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30514497] [2021-10-16 03:12:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:04,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:12:04,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:04,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30514497] [2021-10-16 03:12:04,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30514497] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:04,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:04,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:12:04,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385133820] [2021-10-16 03:12:04,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:12:04,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:12:04,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:12:04,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:12:04,755 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-16 03:12:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:04,786 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2021-10-16 03:12:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:12:04,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-16 03:12:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:04,788 INFO L225 Difference]: With dead ends: 23 [2021-10-16 03:12:04,788 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 03:12:04,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:12:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 03:12:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-10-16 03:12:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2021-10-16 03:12:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-10-16 03:12:04,794 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2021-10-16 03:12:04,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:04,795 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-10-16 03:12:04,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-16 03:12:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2021-10-16 03:12:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:12:04,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:04,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:04,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:12:04,797 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 46798207, now seen corresponding path program 1 times [2021-10-16 03:12:04,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:04,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629371806] [2021-10-16 03:12:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:04,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:12:04,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:04,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629371806] [2021-10-16 03:12:04,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629371806] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:12:04,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794529066] [2021-10-16 03:12:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:04,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:04,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:04,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:12:04,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:12:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:05,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:12:05,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:12:05,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:12:05,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794529066] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:12:05,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1361688183] [2021-10-16 03:12:05,185 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 03:12:05,185 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:12:05,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:12:05,195 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:12:05,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:12:05,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:05,236 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:12:05,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:05,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 03:12:05,240 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:12:05,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:05,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 03:12:05,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-16 03:12:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:05,290 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 [2021-10-16 03:12:05,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:05,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-16 03:12:05,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:05,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-16 03:12:05,295 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:12:05,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:05,323 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:05,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:05,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-16 03:12:05,329 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:12:05,329 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:110, output treesize:111 [2021-10-16 03:12:05,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:12:05,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:05,556 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) [2021-10-16 03:12:05,560 INFO L168 Benchmark]: Toolchain (without parser) took 2677.76 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.3 MB in the beginning and 64.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:05,561 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:12:05,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.14 ms. Allocated memory is still 94.4 MB. Free memory was 60.1 MB in the beginning and 60.8 MB in the end (delta: -622.0 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:05,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.86 ms. Allocated memory is still 94.4 MB. Free memory was 60.8 MB in the beginning and 58.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:05,562 INFO L168 Benchmark]: Boogie Preprocessor took 31.43 ms. Allocated memory is still 94.4 MB. Free memory was 58.7 MB in the beginning and 57.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:12:05,563 INFO L168 Benchmark]: RCFGBuilder took 663.34 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 57.1 MB in the beginning and 84.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:05,564 INFO L168 Benchmark]: TraceAbstraction took 1386.48 ms. Allocated memory is still 113.2 MB. Free memory was 83.9 MB in the beginning and 64.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:05,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 508.14 ms. Allocated memory is still 94.4 MB. Free memory was 60.1 MB in the beginning and 60.8 MB in the end (delta: -622.0 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.86 ms. Allocated memory is still 94.4 MB. Free memory was 60.8 MB in the beginning and 58.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.43 ms. Allocated memory is still 94.4 MB. Free memory was 58.7 MB in the beginning and 57.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 663.34 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 57.1 MB in the beginning and 84.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1386.48 ms. Allocated memory is still 113.2 MB. Free memory was 83.9 MB in the beginning and 64.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.8 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. [2021-10-16 03:12:05,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:12:08,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:12:08,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:12:08,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:12:08,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:12:08,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:12:08,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:12:08,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:12:08,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:12:08,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:12:08,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:12:08,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:12:08,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:12:08,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:12:08,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:12:08,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:12:08,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:12:08,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:12:08,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:12:08,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:12:08,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:12:08,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:12:08,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:12:08,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:12:08,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:12:08,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:12:08,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:12:08,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:12:08,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:12:08,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:12:08,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:12:08,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:12:08,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:12:08,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:12:08,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:12:08,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:12:08,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:12:08,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:12:08,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:12:08,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:12:08,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:12:08,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:12:08,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:12:08,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:12:08,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:12:08,350 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:12:08,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:12:08,350 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:12:08,350 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:12:08,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:12:08,351 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:12:08,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:12:08,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:12:08,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:12:08,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:12:08,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:12:08,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:12:08,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:12:08,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:12:08,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:12:08,356 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:12:08,356 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:12:08,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:12:08,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:12:08,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:12:08,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:12:08,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:12:08,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:12:08,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:08,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:12:08,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:12:08,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:12:08,358 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:12:08,359 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:12:08,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:12:08,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:12:08,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:12:08,360 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_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf89a9db9089e52f60762f5e253ea7c1b22972a3 [2021-10-16 03:12:08,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:12:08,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:12:08,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:12:08,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:12:08,843 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:12:08,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i [2021-10-16 03:12:08,917 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data/9c3b2d6b0/aebc4874a1d1494e8c1b7b16b3979b68/FLAGff789fdbd [2021-10-16 03:12:09,482 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:12:09,483 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i [2021-10-16 03:12:09,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data/9c3b2d6b0/aebc4874a1d1494e8c1b7b16b3979b68/FLAGff789fdbd [2021-10-16 03:12:09,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/data/9c3b2d6b0/aebc4874a1d1494e8c1b7b16b3979b68 [2021-10-16 03:12:09,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:12:09,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:12:09,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:09,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:12:09,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:12:09,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:09" (1/1) ... [2021-10-16 03:12:09,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d56a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:09, skipping insertion in model container [2021-10-16 03:12:09,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:09" (1/1) ... [2021-10-16 03:12:09,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:12:09,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:12:10,254 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_4873cdc4-5920-40eb-87fd-283e142bbad1/sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i[24236,24249] [2021-10-16 03:12:10,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:10,288 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:12:10,344 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_4873cdc4-5920-40eb-87fd-283e142bbad1/sv-benchmarks/c/list-simple/sll2n_update_all_reverse.i[24236,24249] [2021-10-16 03:12:10,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:10,388 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:12:10,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10 WrapperNode [2021-10-16 03:12:10,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:10,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:10,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:12:10,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:12:10,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:10,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:12:10,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:12:10,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:12:10,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:12:10,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:12:10,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:12:10,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:12:10,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (1/1) ... [2021-10-16 03:12:10,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:10,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:10,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:12:10,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:12:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:12:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:12:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:12:10,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:12:10,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:12:10,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:12:10,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:12:10,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:12:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:12:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:12:11,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:12:11,176 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 03:12:11,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:11 BoogieIcfgContainer [2021-10-16 03:12:11,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:12:11,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:12:11,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:12:11,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:12:11,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:12:09" (1/3) ... [2021-10-16 03:12:11,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eca70a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:12:11, skipping insertion in model container [2021-10-16 03:12:11,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:10" (2/3) ... [2021-10-16 03:12:11,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eca70a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:12:11, skipping insertion in model container [2021-10-16 03:12:11,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:11" (3/3) ... [2021-10-16 03:12:11,187 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2021-10-16 03:12:11,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:12:11,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:12:11,242 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:12:11,249 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 [2021-10-16 03:12:11,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:12:11,263 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) [2021-10-16 03:12:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:12:11,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:11,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:11,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:11,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1121238131, now seen corresponding path program 1 times [2021-10-16 03:12:11,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:12:11,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665067354] [2021-10-16 03:12:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:11,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:12:11,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:12:11,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:12:11,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:12:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:11,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:12:11,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:11,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:11,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:12:11,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665067354] [2021-10-16 03:12:11,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665067354] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:11,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:11,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:12:11,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026042845] [2021-10-16 03:12:11,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:12:11,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:12:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:12:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:12:11,539 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) [2021-10-16 03:12:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:11,555 INFO L93 Difference]: Finished difference Result 50 states and 73 transitions. [2021-10-16 03:12:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:12:11,556 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 [2021-10-16 03:12:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:11,574 INFO L225 Difference]: With dead ends: 50 [2021-10-16 03:12:11,575 INFO L226 Difference]: Without dead ends: 22 [2021-10-16 03:12:11,577 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 [2021-10-16 03:12:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-16 03:12:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-16 03:12:11,606 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) [2021-10-16 03:12:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-16 03:12:11,608 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-10-16 03:12:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:11,608 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-16 03:12:11,608 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) [2021-10-16 03:12:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-16 03:12:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:12:11,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:11,610 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:11,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:12:11,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:12:11,826 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1860179837, now seen corresponding path program 1 times [2021-10-16 03:12:11,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:12:11,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310389007] [2021-10-16 03:12:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:11,829 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:12:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:12:11,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:12:11,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:12:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:11,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:12:11,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:11,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:12,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:12:12,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310389007] [2021-10-16 03:12:12,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310389007] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:12,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:12,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:12:12,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955440797] [2021-10-16 03:12:12,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:12:12,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:12:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:12:12,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:12:12,027 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) [2021-10-16 03:12:12,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:12,051 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-10-16 03:12:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:12:12,051 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 [2021-10-16 03:12:12,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:12,052 INFO L225 Difference]: With dead ends: 43 [2021-10-16 03:12:12,053 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 03:12:12,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:12:12,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 03:12:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-16 03:12:12,058 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) [2021-10-16 03:12:12,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-16 03:12:12,059 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2021-10-16 03:12:12,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:12,060 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-16 03:12:12,060 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) [2021-10-16 03:12:12,060 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-16 03:12:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 03:12:12,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:12,061 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:12,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:12:12,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:12:12,282 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:12,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:12,284 INFO L82 PathProgramCache]: Analyzing trace with hash -650193283, now seen corresponding path program 1 times [2021-10-16 03:12:12,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:12:12,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485348333] [2021-10-16 03:12:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:12,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:12:12,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:12:12,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:12:12,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:12:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:12,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:12:12,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:12:12,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:12:12,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:12:12,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485348333] [2021-10-16 03:12:12,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485348333] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:12,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:12,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:12:12,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156449777] [2021-10-16 03:12:12,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:12:12,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:12:12,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:12:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:12:12,686 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) [2021-10-16 03:12:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:12,763 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-10-16 03:12:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:12:12,765 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 [2021-10-16 03:12:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:12,766 INFO L225 Difference]: With dead ends: 51 [2021-10-16 03:12:12,766 INFO L226 Difference]: Without dead ends: 42 [2021-10-16 03:12:12,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:12:12,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-16 03:12:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-10-16 03:12:12,774 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) [2021-10-16 03:12:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-10-16 03:12:12,776 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2021-10-16 03:12:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:12,776 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-10-16 03:12:12,777 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) [2021-10-16 03:12:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-10-16 03:12:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 03:12:12,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:12,779 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] [2021-10-16 03:12:12,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:12:12,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:12:12,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:12,995 INFO L82 PathProgramCache]: Analyzing trace with hash 218280017, now seen corresponding path program 1 times [2021-10-16 03:12:12,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:12:12,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862217740] [2021-10-16 03:12:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:12,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:12:12,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:12:12,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:12:13,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:12:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:13,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:12:13,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 03:12:13,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 03:12:13,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:12:13,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862217740] [2021-10-16 03:12:13,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862217740] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:13,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:13,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 03:12:13,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689737504] [2021-10-16 03:12:13,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:12:13,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:12:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:12:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:12:13,481 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-10-16 03:12:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:13,565 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2021-10-16 03:12:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:12:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 [2021-10-16 03:12:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:13,567 INFO L225 Difference]: With dead ends: 58 [2021-10-16 03:12:13,567 INFO L226 Difference]: Without dead ends: 42 [2021-10-16 03:12:13,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:12:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-16 03:12:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-10-16 03:12:13,574 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) [2021-10-16 03:12:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-10-16 03:12:13,575 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 31 [2021-10-16 03:12:13,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:13,575 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-10-16 03:12:13,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-10-16 03:12:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-10-16 03:12:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 03:12:13,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:13,577 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] [2021-10-16 03:12:13,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:12:13,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:12:13,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:13,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1177402658, now seen corresponding path program 1 times [2021-10-16 03:12:13,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:12:13,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515699103] [2021-10-16 03:12:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:13,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:12:13,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:12:13,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:12:13,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:12:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:14,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:12:14,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:12:14,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:12:14,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:12:14,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515699103] [2021-10-16 03:12:14,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515699103] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:14,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:14,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 03:12:14,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585438220] [2021-10-16 03:12:14,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:12:14,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:12:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:12:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:12:14,353 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-10-16 03:12:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:14,423 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-10-16 03:12:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:12:14,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-16 03:12:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:14,426 INFO L225 Difference]: With dead ends: 51 [2021-10-16 03:12:14,426 INFO L226 Difference]: Without dead ends: 43 [2021-10-16 03:12:14,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:12:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-16 03:12:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-10-16 03:12:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 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) [2021-10-16 03:12:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-10-16 03:12:14,432 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 32 [2021-10-16 03:12:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:14,433 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-10-16 03:12:14,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-10-16 03:12:14,433 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-10-16 03:12:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 03:12:14,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:14,434 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] [2021-10-16 03:12:14,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:12:14,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:12:14,648 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:14,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2088089927, now seen corresponding path program 1 times [2021-10-16 03:12:14,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:12:14,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965284212] [2021-10-16 03:12:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:14,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:12:14,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:12:14,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:12:14,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:12:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:14,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-16 03:12:14,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:15,006 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 [2021-10-16 03:12:15,194 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:12:15,195 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 [2021-10-16 03:12:15,340 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 [2021-10-16 03:12:15,351 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 [2021-10-16 03:12:15,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:12:15,918 INFO L354 Elim1Store]: treesize reduction 101, result has 14.4 percent of original size [2021-10-16 03:12:15,919 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 139 treesize of output 102 [2021-10-16 03:12:15,928 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 94 treesize of output 84 [2021-10-16 03:12:15,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:12:15,976 INFO L354 Elim1Store]: treesize reduction 105, result has 11.0 percent of original size [2021-10-16 03:12:15,976 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 84 treesize of output 67 [2021-10-16 03:12:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:16,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:12:16,341 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-10-16 03:12:16,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 73 [2021-10-16 03:12:16,378 INFO L354 Elim1Store]: treesize reduction 61, result has 23.8 percent of original size [2021-10-16 03:12:16,378 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 67 treesize of output 66 [2021-10-16 03:12:16,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:16,385 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 56 treesize of output 38 [2021-10-16 03:12:16,847 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 59 treesize of output 47 [2021-10-16 03:12:16,856 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 44 treesize of output 32 [2021-10-16 03:12:17,019 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 29 treesize of output 21 [2021-10-16 03:12:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 03:12:17,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:17,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:17,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-16 03:12:17,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:18,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 03:12:21,879 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 510 treesize of output 466 [2021-10-16 03:12:21,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:21,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 562 [2021-10-16 03:12:21,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:21,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 658 [2021-10-16 03:12:25,693 INFO L354 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size [2021-10-16 03:12:25,695 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 44 [2021-10-16 03:12:25,701 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 36 treesize of output 32 [2021-10-16 03:12:25,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 47 treesize of output 39 [2021-10-16 03:12:25,803 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-10-16 03:12:25,804 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 32 [2021-10-16 03:12:25,812 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 24 treesize of output 20 [2021-10-16 03:12:25,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:12:25,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 9 [2021-10-16 03:12:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:26,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:12:26,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965284212] [2021-10-16 03:12:26,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965284212] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:12:26,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1639456620] [2021-10-16 03:12:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:26,976 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:12:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:12:26,988 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:12:27,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 03:12:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:27,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-16 03:12:27,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:27,563 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 [2021-10-16 03:12:28,073 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:12:28,073 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 [2021-10-16 03:12:28,407 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 [2021-10-16 03:12:28,414 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 [2021-10-16 03:12:29,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:12:29,574 INFO L354 Elim1Store]: treesize reduction 105, result has 11.0 percent of original size [2021-10-16 03:12:29,575 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 132 treesize of output 91 [2021-10-16 03:12:29,580 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 89 treesize of output 79 [2021-10-16 03:12:29,600 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-10-16 03:12:29,600 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 79 treesize of output 63 [2021-10-16 03:12:30,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:30,207 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 75 treesize of output 57 [2021-10-16 03:12:30,240 INFO L354 Elim1Store]: treesize reduction 61, result has 23.8 percent of original size [2021-10-16 03:12:30,240 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 60 treesize of output 59 [2021-10-16 03:12:30,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:30,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-16 03:12:30,817 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 [2021-10-16 03:12:30,822 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 [2021-10-16 03:12:31,009 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 [2021-10-16 03:12:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 03:12:31,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:31,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:31,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-16 03:12:31,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:31,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 03:12:36,201 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 244 treesize of output 222 [2021-10-16 03:12:36,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:36,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-10-16 03:12:36,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:36,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-16 03:12:37,781 INFO L354 Elim1Store]: treesize reduction 24, result has 52.0 percent of original size [2021-10-16 03:12:37,782 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 80 [2021-10-16 03:12:37,832 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-10-16 03:12:37,833 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 62 [2021-10-16 03:12:37,842 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 54 treesize of output 50 [2021-10-16 03:12:37,847 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 50 treesize of output 46 [2021-10-16 03:12:37,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 61 treesize of output 53 [2021-10-16 03:12:37,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 64 treesize of output 56 [2021-10-16 03:12:37,864 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 03:12:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:38,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1639456620] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:12:38,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496229451] [2021-10-16 03:12:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:38,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:38,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:38,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:12:38,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 03:12:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:38,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-16 03:12:38,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:38,960 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 [2021-10-16 03:12:39,025 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:12:39,026 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 [2021-10-16 03:12:39,095 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 [2021-10-16 03:12:39,114 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 [2021-10-16 03:12:39,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:12:39,463 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-10-16 03:12:39,463 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 132 treesize of output 89 [2021-10-16 03:12:39,471 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 77 treesize of output 69 [2021-10-16 03:12:39,501 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-16 03:12:39,502 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 69 treesize of output 55 [2021-10-16 03:12:39,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:39,848 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 75 treesize of output 57 [2021-10-16 03:12:39,879 INFO L354 Elim1Store]: treesize reduction 61, result has 23.8 percent of original size [2021-10-16 03:12:39,879 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 60 treesize of output 59 [2021-10-16 03:12:39,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:39,888 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 49 treesize of output 37 [2021-10-16 03:12:40,053 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 [2021-10-16 03:12:40,059 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 [2021-10-16 03:12:40,106 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 [2021-10-16 03:12:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 03:12:40,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:42,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:42,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-16 03:12:42,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:42,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 03:12:45,871 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 510 treesize of output 466 [2021-10-16 03:12:45,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:45,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 562 [2021-10-16 03:12:45,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:45,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 658 [2021-10-16 03:12:50,002 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-10-16 03:12:50,002 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 73 [2021-10-16 03:12:50,071 INFO L354 Elim1Store]: treesize reduction 24, result has 52.0 percent of original size [2021-10-16 03:12:50,072 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 62 [2021-10-16 03:12:50,079 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 54 treesize of output 50 [2021-10-16 03:12:50,084 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 50 treesize of output 46 [2021-10-16 03:12:50,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 61 treesize of output 53 [2021-10-16 03:12:50,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 64 treesize of output 56 [2021-10-16 03:12:50,097 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 03:12:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:51,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496229451] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:12:51,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:12:51,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20, 20, 20, 20] total 74 [2021-10-16 03:12:51,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668884569] [2021-10-16 03:12:51,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-16 03:12:51,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:12:51,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-16 03:12:51,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=5117, Unknown=3, NotChecked=0, Total=5402 [2021-10-16 03:12:51,348 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 74 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 74 states have internal predecessors, (126), 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) [2021-10-16 03:13:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:04,337 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2021-10-16 03:13:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-16 03:13:04,339 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 74 states have internal predecessors, (126), 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 [2021-10-16 03:13:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:04,341 INFO L225 Difference]: With dead ends: 75 [2021-10-16 03:13:04,341 INFO L226 Difference]: Without dead ends: 73 [2021-10-16 03:13:04,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 34922.5ms TimeCoverageRelationStatistics Valid=1201, Invalid=8302, Unknown=3, NotChecked=0, Total=9506 [2021-10-16 03:13:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-16 03:13:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2021-10-16 03:13:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 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) [2021-10-16 03:13:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2021-10-16 03:13:04,373 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 33 [2021-10-16 03:13:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:04,373 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-10-16 03:13:04,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 74 states have internal predecessors, (126), 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) [2021-10-16 03:13:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2021-10-16 03:13:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-16 03:13:04,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:04,378 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, 1] [2021-10-16 03:13:04,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:04,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:04,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:04,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:13:04,984 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:04,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:04,984 INFO L82 PathProgramCache]: Analyzing trace with hash -254624194, now seen corresponding path program 2 times [2021-10-16 03:13:04,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:04,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738010683] [2021-10-16 03:13:04,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:13:04,985 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:04,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:04,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:04,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:13:05,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:13:05,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:05,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:13:05,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:13:05,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:05,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:13:05,832 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:05,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738010683] [2021-10-16 03:13:05,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738010683] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:05,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1849795580] [2021-10-16 03:13:05,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:13:05,833 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:05,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:13:05,836 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:13:05,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 03:13:06,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:13:06,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:06,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:13:06,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:13:06,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:13:06,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1849795580] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:06,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472453739] [2021-10-16 03:13:06,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:13:06,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:06,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:13:06,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:13:06,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 03:13:07,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:13:07,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:07,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:13:07,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:13:07,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:13:07,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472453739] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:07,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:13:07,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 15 [2021-10-16 03:13:07,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610043008] [2021-10-16 03:13:07,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 03:13:07,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 03:13:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:13:07,881 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 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) [2021-10-16 03:13:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:09,282 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2021-10-16 03:13:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 03:13:09,283 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-16 03:13:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:09,284 INFO L225 Difference]: With dead ends: 107 [2021-10-16 03:13:09,284 INFO L226 Difference]: Without dead ends: 99 [2021-10-16 03:13:09,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1399.4ms TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2021-10-16 03:13:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-16 03:13:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 67. [2021-10-16 03:13:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 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) [2021-10-16 03:13:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2021-10-16 03:13:09,320 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 34 [2021-10-16 03:13:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:09,320 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2021-10-16 03:13:09,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 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) [2021-10-16 03:13:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2021-10-16 03:13:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-16 03:13:09,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:09,332 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, 1] [2021-10-16 03:13:09,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:09,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:09,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:09,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:09,943 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:09,944 INFO L82 PathProgramCache]: Analyzing trace with hash 891797658, now seen corresponding path program 3 times [2021-10-16 03:13:09,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:09,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017432692] [2021-10-16 03:13:09,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:13:09,945 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:09,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:09,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:09,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:13:10,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 03:13:10,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:10,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:13:10,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:10,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:10,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:10,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017432692] [2021-10-16 03:13:10,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017432692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:10,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [244593389] [2021-10-16 03:13:10,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:13:10,834 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:10,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:13:10,835 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:13:10,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 03:13:11,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 03:13:11,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:11,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:13:11,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:11,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:11,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [244593389] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:11,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279924250] [2021-10-16 03:13:11,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:13:11,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:11,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:13:11,739 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:13:11,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 03:13:12,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 03:13:12,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:12,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:13:12,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:12,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 03:13:13,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279924250] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:13:13,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-16 03:13:13,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 6, 6, 6] total 14 [2021-10-16 03:13:13,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411858892] [2021-10-16 03:13:13,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:13:13,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:13:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-16 03:13:13,075 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-16 03:13:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:13,253 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2021-10-16 03:13:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:13:13,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 34 [2021-10-16 03:13:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:13,254 INFO L225 Difference]: With dead ends: 98 [2021-10-16 03:13:13,254 INFO L226 Difference]: Without dead ends: 71 [2021-10-16 03:13:13,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 339.5ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-16 03:13:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-16 03:13:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2021-10-16 03:13:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 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) [2021-10-16 03:13:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2021-10-16 03:13:13,278 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 34 [2021-10-16 03:13:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:13,279 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2021-10-16 03:13:13,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-16 03:13:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2021-10-16 03:13:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-16 03:13:13,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:13,280 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, 1] [2021-10-16 03:13:13,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:13,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:13,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-16 03:13:13,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:13,895 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:13,896 INFO L82 PathProgramCache]: Analyzing trace with hash 985623046, now seen corresponding path program 4 times [2021-10-16 03:13:13,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:13,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692865369] [2021-10-16 03:13:13,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 03:13:13,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:13,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:13,899 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:13,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 03:13:14,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 03:13:14,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:14,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:13:14,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-16 03:13:14,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-16 03:13:14,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:14,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692865369] [2021-10-16 03:13:14,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692865369] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:14,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [798998055] [2021-10-16 03:13:14,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 03:13:14,708 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:14,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:13:14,719 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:13:14,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 03:13:15,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 03:13:15,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:15,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:13:15,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-16 03:13:15,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-16 03:13:15,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [798998055] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:15,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304795954] [2021-10-16 03:13:15,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 03:13:15,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:15,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:13:15,545 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:13:15,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-16 03:13:15,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 03:13:15,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:15,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:13:15,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-16 03:13:16,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:13:16,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304795954] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:16,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:13:16,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 15 [2021-10-16 03:13:16,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934263031] [2021-10-16 03:13:16,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 03:13:16,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 03:13:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:13:16,697 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:17,973 INFO L93 Difference]: Finished difference Result 168 states and 202 transitions. [2021-10-16 03:13:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 03:13:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-16 03:13:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:17,980 INFO L225 Difference]: With dead ends: 168 [2021-10-16 03:13:17,980 INFO L226 Difference]: Without dead ends: 133 [2021-10-16 03:13:17,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1295.4ms TimeCoverageRelationStatistics Valid=303, Invalid=753, Unknown=0, NotChecked=0, Total=1056 [2021-10-16 03:13:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-16 03:13:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 79. [2021-10-16 03:13:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 78 states have internal predecessors, (96), 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) [2021-10-16 03:13:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2021-10-16 03:13:18,022 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 34 [2021-10-16 03:13:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:18,023 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2021-10-16 03:13:18,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2021-10-16 03:13:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-16 03:13:18,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:18,028 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:13:18,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:18,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:18,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:18,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:18,632 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2070220400, now seen corresponding path program 5 times [2021-10-16 03:13:18,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:18,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661312036] [2021-10-16 03:13:18,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 03:13:18,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:18,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:18,634 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:18,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 03:13:19,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-16 03:13:19,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:19,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:13:19,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-16 03:13:19,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:13:19,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:19,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661312036] [2021-10-16 03:13:19,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661312036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:19,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699163516] [2021-10-16 03:13:19,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 03:13:19,886 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:19,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:13:19,886 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:13:19,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-16 03:13:20,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-16 03:13:20,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:20,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 03:13:20,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:20,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:21,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1699163516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:21,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846275562] [2021-10-16 03:13:21,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 03:13:21,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:21,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:13:21,201 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:13:21,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-16 03:13:21,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-16 03:13:21,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:21,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 03:13:21,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:22,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:22,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846275562] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:22,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:13:22,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 7, 8] total 15 [2021-10-16 03:13:22,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911544340] [2021-10-16 03:13:22,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 03:13:22,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 03:13:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:13:22,460 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:22,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:22,855 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2021-10-16 03:13:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:13:22,856 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-16 03:13:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:22,857 INFO L225 Difference]: With dead ends: 106 [2021-10-16 03:13:22,857 INFO L226 Difference]: Without dead ends: 52 [2021-10-16 03:13:22,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 784.5ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-16 03:13:22,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-16 03:13:22,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-16 03:13:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 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) [2021-10-16 03:13:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-10-16 03:13:22,886 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 38 [2021-10-16 03:13:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:22,886 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-10-16 03:13:22,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-10-16 03:13:22,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 03:13:22,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:22,887 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] [2021-10-16 03:13:22,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:23,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:23,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:23,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:13:23,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:23,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1232245788, now seen corresponding path program 1 times [2021-10-16 03:13:23,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:23,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155547165] [2021-10-16 03:13:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:23,505 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:23,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:23,506 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:23,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 03:13:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:23,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 03:13:23,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:24,258 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 11 [2021-10-16 03:13:24,631 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 [2021-10-16 03:13:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:24,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:25,064 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 36 treesize of output 32 [2021-10-16 03:13:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:25,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:25,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155547165] [2021-10-16 03:13:25,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155547165] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:25,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1394505239] [2021-10-16 03:13:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:25,430 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:13:25,431 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:13:25,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-16 03:13:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:26,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 03:13:26,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:26,859 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 11 [2021-10-16 03:13:27,474 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 [2021-10-16 03:13:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:13:27,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:27,612 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 36 treesize of output 32 [2021-10-16 03:13:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:27,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1394505239] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:27,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742045090] [2021-10-16 03:13:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:27,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:13:27,722 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:13:27,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-16 03:13:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:28,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-16 03:13:28,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:28,663 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 11 [2021-10-16 03:13:28,966 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 [2021-10-16 03:13:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:13:28,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:29,710 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 36 treesize of output 32 [2021-10-16 03:13:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 03:13:30,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742045090] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:30,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:13:30,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 16, 11, 14, 11] total 40 [2021-10-16 03:13:30,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167830836] [2021-10-16 03:13:30,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-16 03:13:30,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:30,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-16 03:13:30,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1381, Unknown=0, NotChecked=0, Total=1560 [2021-10-16 03:13:30,177 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:33,570 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2021-10-16 03:13:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-16 03:13:33,572 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-16 03:13:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:33,572 INFO L225 Difference]: With dead ends: 74 [2021-10-16 03:13:33,573 INFO L226 Difference]: Without dead ends: 57 [2021-10-16 03:13:33,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 4641.6ms TimeCoverageRelationStatistics Valid=655, Invalid=2767, Unknown=0, NotChecked=0, Total=3422 [2021-10-16 03:13:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-16 03:13:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-10-16 03:13:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 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) [2021-10-16 03:13:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-10-16 03:13:33,589 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 39 [2021-10-16 03:13:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:33,589 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-10-16 03:13:33,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-10-16 03:13:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-16 03:13:33,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:33,590 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:13:33,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:33,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-10-16 03:13:34,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:34,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:34,191 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:34,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:34,191 INFO L82 PathProgramCache]: Analyzing trace with hash 270533352, now seen corresponding path program 2 times [2021-10-16 03:13:34,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:34,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731684097] [2021-10-16 03:13:34,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:13:34,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:34,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:34,193 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:34,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-16 03:13:34,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:13:34,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:34,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:13:34,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-16 03:13:35,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-16 03:13:35,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:35,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731684097] [2021-10-16 03:13:35,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731684097] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:35,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1098024242] [2021-10-16 03:13:35,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:13:35,348 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:13:35,349 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:13:35,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-10-16 03:13:36,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:13:36,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:36,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:13:36,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-16 03:13:36,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-16 03:13:36,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1098024242] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:36,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102263813] [2021-10-16 03:13:36,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:13:36,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:36,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:13:36,666 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:13:36,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-16 03:13:37,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:13:37,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:13:37,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:13:37,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-16 03:13:37,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-16 03:13:37,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102263813] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:13:37,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-16 03:13:37,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 6, 6, 7] total 12 [2021-10-16 03:13:37,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726158736] [2021-10-16 03:13:37,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:13:37,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:37,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:13:37,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:13:37,792 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:37,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:37,871 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2021-10-16 03:13:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:13:37,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-16 03:13:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:37,873 INFO L225 Difference]: With dead ends: 55 [2021-10-16 03:13:37,873 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:13:37,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 192.6ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:13:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:13:37,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:13:37,875 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) [2021-10-16 03:13:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:13:37,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2021-10-16 03:13:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:37,876 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:13:37,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:13:37,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:13:37,878 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:13:37,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-16 03:13:38,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-16 03:13:38,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:38,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:38,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:13:38,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:38,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:46,083 INFO L860 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2021-10-16 03:13:46,084 INFO L857 garLoopResultBuilder]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2021-10-16 03:13:46,084 INFO L853 garLoopResultBuilder]: At program point L622-3(lines 622 627) the Hoare annotation is: (let ((.cse16 (bvmul (_ bv2 32) ULTIMATE.start_main_~len~0))) (let ((.cse11 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32))) (.cse0 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_update_at_~head.offset)) (.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))))) (.cse4 (= .cse16 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~data))) (.cse5 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse6 (= .cse16 (bvadd (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) (_ bv2 32)))) (.cse7 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse8 (= ULTIMATE.start_main_~len~0 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~index))) (.cse9 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse10 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse12 (= ULTIMATE.start_sll_update_at_~head.base ULTIMATE.start_main_~s~0.base)) (.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 .cse5 .cse6 .cse7 .cse8 (= (bvadd (_ bv2 32) ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~len~0) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_sll_get_data_at_~head.offset (_ bv0 32)) .cse5 .cse6 .cse7 .cse8 .cse9 (= ULTIMATE.start_main_~expected~0 (_ bv2 32)) .cse10 (not (bvsge ULTIMATE.start_main_~i~0 (_ bv0 32))) .cse11 (= (_ bv2 32) |ULTIMATE.start_sll_get_data_at_#res|) .cse12 .cse13 .cse14 (= (_ bv2 32) (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset))) (let ((.cse17 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse15 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse18 (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) .cse17))) (and .cse0 .cse1 .cse2 .cse3 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32)) .cse4 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse15) ULTIMATE.start_sll_create_~head~0.base)) (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse15) (_ bv0 32)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) ULTIMATE.start_main_~len~0) (= .cse16 (bvadd (_ bv1 32) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) .cse17)) .cse18))) (= .cse18 (_ bv0 32)) (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)))) .cse12 .cse13 .cse14)))))) [2021-10-16 03:13:46,084 INFO L857 garLoopResultBuilder]: For program point L622-4(lines 622 627) no Hoare annotation was computed. [2021-10-16 03:13:46,084 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 .cse2 .cse3 .cse4 (= ULTIMATE.start_sll_create_~len (_ bv2 32)) .cse5) (and .cse0 .cse1 .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))))) [2021-10-16 03:13:46,084 INFO L857 garLoopResultBuilder]: For program point L606(lines 1 632) no Hoare annotation was computed. [2021-10-16 03:13:46,084 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:13:46,084 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:13:46,084 INFO L860 garLoopResultBuilder]: At program point L631(lines 613 632) the Hoare annotation is: true [2021-10-16 03:13:46,085 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))) [2021-10-16 03:13:46,085 INFO L853 garLoopResultBuilder]: At program point L607-2(lines 607 610) the Hoare annotation is: (let ((.cse17 (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse5 (bvmul (_ bv2 32) ULTIMATE.start_main_~len~0)) (.cse22 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse23 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse24 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse25 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse12 (select .cse24 .cse25)) (.cse10 (select .cse23 .cse25)) (.cse18 (= (select .cse24 (_ bv4 32)) (_ bv0 32))) (.cse0 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_update_at_~head.offset)) (.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))))) (.cse19 (not (= ULTIMATE.start_main_~s~0.base (select .cse23 (_ bv4 32))))) (.cse4 (= (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) .cse22) ULTIMATE.start_sll_create_~head~0.base))) (.cse7 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse22) (_ bv0 32))) (.cse20 (= .cse5 (bvadd (_ bv1 32) ULTIMATE.start_sll_update_at_~data))) (.cse8 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse9 (= (_ 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))) (.cse21 (= .cse17 ULTIMATE.start_main_~len~0)) (.cse13 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse14 (= ULTIMATE.start_sll_update_at_~head.base ULTIMATE.start_main_~s~0.base)) (.cse15 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse16 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= .cse5 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~data)) .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~len~0 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~index)) (= (bvadd (_ bv2 32) ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~len~0) .cse9 (not (= ULTIMATE.start_main_~s~0.base .cse10)) (not (bvsgt ULTIMATE.start_sll_update_at_~index (_ bv0 32))) .cse11 (= .cse5 (bvadd (_ bv1 32) (select (select |#memory_int| .cse10) .cse12))) (= .cse12 (_ bv0 32)) .cse13 .cse14 .cse15 .cse16 (bvsgt .cse17 (_ bv0 32))) (and .cse18 .cse0 .cse2 .cse3 .cse19 .cse4 .cse6 (= .cse12 ULTIMATE.start_sll_update_at_~head.offset) .cse7 .cse20 .cse8 (= ULTIMATE.start_main_~i~0 (bvadd (_ bv1 32) ULTIMATE.start_sll_update_at_~index)) .cse9 .cse11 .cse21 .cse13 (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index) .cse15 (= ULTIMATE.start_sll_update_at_~head.base .cse10) .cse16) (and .cse18 .cse0 .cse1 .cse2 .cse3 .cse19 .cse4 .cse6 .cse7 (= ULTIMATE.start_main_~len~0 (_ bv2 32)) .cse20 .cse8 .cse9 .cse11 .cse21 .cse13 (= (_ bv1 32) ULTIMATE.start_sll_update_at_~index) .cse14 .cse15 .cse16)))) [2021-10-16 03:13:46,085 INFO L857 garLoopResultBuilder]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2021-10-16 03:13:46,085 INFO L857 garLoopResultBuilder]: For program point L624(lines 624 626) no Hoare annotation was computed. [2021-10-16 03:13:46,086 INFO L853 garLoopResultBuilder]: At program point L600-2(lines 600 603) the Hoare annotation is: (let ((.cse29 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse27 (bvmul (_ bv2 32) ULTIMATE.start_main_~len~0)) (.cse28 (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) .cse29)) (.cse30 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset))) (let ((.cse4 (= (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) .cse30) ULTIMATE.start_sll_create_~head~0.base))) (.cse8 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse30) (_ bv0 32))) (.cse11 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse17 (= (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) ULTIMATE.start_main_~len~0)) (.cse18 (= .cse27 (bvadd (_ bv1 32) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) .cse29)) .cse28)))) (.cse19 (= .cse28 (_ bv0 32))) (.cse20 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse0 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_update_at_~head.offset)) (.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 (= .cse27 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~data))) (.cse10 (= ULTIMATE.start_sll_get_data_at_~head.offset (_ bv0 32))) (.cse12 (= .cse27 (bvadd (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) (_ bv2 32)))) (.cse13 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse14 (= ULTIMATE.start_main_~len~0 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~index))) (.cse15 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse16 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse21 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32))) (.cse22 (= ULTIMATE.start_sll_update_at_~head.base ULTIMATE.start_main_~s~0.base)) (.cse23 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse24 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset)) (.cse9 (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (exists ((ULTIMATE.start_main_~i~0 (_ BitVec 32))) (let ((.cse6 (bvmul (_ bv2 32) ULTIMATE.start_main_~i~0))) (and (= (bvadd (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset) (_ bv1 32) .cse6) (bvmul (_ bv2 32) ULTIMATE.start_main_~expected~0)) (= (bvadd (_ bv1 32) .cse6) ULTIMATE.start_main_~expected~0)))) .cse7 .cse8 (= (_ bv3 32) .cse9) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (let ((.cse25 (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_get_data_at_~head.base) (_ bv4 32))) (.cse26 (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_get_data_at_~head.base) (_ bv4 32)))) (and (= ULTIMATE.start_sll_get_data_at_~index (_ bv1 32)) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~expected~0 (_ bv3 32)) .cse3 .cse4 .cse5 .cse7 .cse8 (= .cse25 (_ bv0 32)) .cse10 .cse11 .cse12 (= (_ bv3 32) (select (select |#memory_int| .cse26) .cse25)) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse22 .cse23 (not (= .cse26 ULTIMATE.start_sll_get_data_at_~head.base)) .cse24)) (and .cse0 (bvsge ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse1 .cse2 .cse3 .cse5 .cse10 .cse12 .cse13 .cse14 (= (bvadd (_ bv2 32) ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~len~0) .cse15 (not (bvsgt ULTIMATE.start_sll_update_at_~index (_ bv0 32))) (= ULTIMATE.start_main_~expected~0 (_ bv2 32)) .cse16 .cse21 .cse22 .cse23 .cse24 (= (_ bv2 32) .cse9)))))) [2021-10-16 03:13:46,086 INFO L857 garLoopResultBuilder]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2021-10-16 03:13:46,086 INFO L853 garLoopResultBuilder]: At program point L625(lines 613 632) the Hoare annotation is: false [2021-10-16 03:13:46,086 INFO L857 garLoopResultBuilder]: For program point L592(lines 592 598) no Hoare annotation was computed. [2021-10-16 03:13:46,086 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2021-10-16 03:13:46,087 INFO L857 garLoopResultBuilder]: For program point L576-1(lines 576 578) no Hoare annotation was computed. [2021-10-16 03:13:46,087 INFO L860 garLoopResultBuilder]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2021-10-16 03:13:46,087 INFO L853 garLoopResultBuilder]: At program point L618-2(lines 618 621) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse4 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse23 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse17 (bvmul (_ bv2 32) ULTIMATE.start_main_~len~0)) (.cse18 (select .cse4 .cse23)) (.cse16 (select .cse0 .cse23)) (.cse12 (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse22 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset))) (let ((.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) .cse22) ULTIMATE.start_sll_create_~head~0.base))) (.cse7 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse22) (_ bv0 32))) (.cse8 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse21 (bvsgt .cse12 (_ bv0 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))) (.cse19 (= .cse17 (bvadd (_ bv1 32) (select (select |#memory_int| .cse18) .cse16)))) (.cse20 (= .cse16 (_ bv0 32))) (.cse13 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse14 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse15 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and (= (select .cse0 (_ bv4 32)) (_ bv0 32)) .cse1 .cse2 .cse3 (not (= ULTIMATE.start_main_~s~0.base (select .cse4 (_ bv4 32)))) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (= .cse12 ULTIMATE.start_main_~len~0) .cse13 .cse14 .cse15) (and .cse1 .cse2 .cse3 .cse5 .cse6 (= .cse16 ULTIMATE.start_sll_update_at_~head.offset) .cse7 .cse8 (= .cse17 (bvadd (_ bv1 32) ULTIMATE.start_sll_update_at_~data)) .cse9 .cse10 (not (= ULTIMATE.start_main_~s~0.base .cse18)) (not (bvsgt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0) (_ bv0 32))) .cse11 .cse19 .cse20 .cse13 (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index) .cse14 (= ULTIMATE.start_sll_update_at_~head.base .cse18) .cse15 .cse21) (and (bvsgt (bvadd (_ bv2 32) ULTIMATE.start_main_~i~0) (_ bv0 32)) .cse1 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_update_at_~head.offset) .cse2 .cse3 .cse5 (= .cse17 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~data)) .cse6 .cse7 .cse8 (= .cse17 (bvadd (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) (_ bv2 32))) (not .cse21) .cse9 (= ULTIMATE.start_main_~len~0 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~index)) .cse10 .cse11 .cse19 .cse20 .cse13 (= ULTIMATE.start_sll_update_at_~head.base ULTIMATE.start_main_~s~0.base) .cse14 .cse15))))) [2021-10-16 03:13:46,087 INFO L857 garLoopResultBuilder]: For program point L585-2(lines 585 589) no Hoare annotation was computed. [2021-10-16 03:13:46,087 INFO L857 garLoopResultBuilder]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2021-10-16 03:13:46,087 INFO L853 garLoopResultBuilder]: At program point L585-3(lines 585 589) the Hoare annotation is: (let ((.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))))) (.cse0 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse5 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse6 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse1 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse7 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 (= ULTIMATE.start_sll_create_~len (_ bv2 32))) (let ((.cse4 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset))) (and .cse2 .cse3 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse4) ULTIMATE.start_sll_create_~head~0.base)) (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse4) (_ bv0 32)) .cse0 .cse5 .cse6 .cse1 .cse7)) (and .cse2 .cse3 .cse0 .cse5 .cse6 .cse1 .cse7 (bvsgt ULTIMATE.start_sll_create_~len (_ bv0 32))))) [2021-10-16 03:13:46,088 INFO L857 garLoopResultBuilder]: For program point L585-4(lines 585 589) no Hoare annotation was computed. [2021-10-16 03:13:46,088 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:13:46,088 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2021-10-16 03:13:46,088 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:13:46,088 INFO L853 garLoopResultBuilder]: At program point L604(lines 599 605) the Hoare annotation is: (let ((.cse18 (bvmul (_ bv2 32) ULTIMATE.start_main_~len~0))) (let ((.cse0 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_update_at_~head.offset)) (.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))))) (.cse4 (= .cse18 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~data))) (.cse15 (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset)) (.cse5 (= ULTIMATE.start_sll_get_data_at_~head.offset (_ bv0 32))) (.cse6 (= .cse18 (bvadd (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) (_ bv2 32)))) (.cse7 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse8 (= ULTIMATE.start_main_~len~0 (bvadd (_ bv2 32) ULTIMATE.start_sll_update_at_~index))) (.cse9 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse10 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse11 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32))) (.cse12 (= ULTIMATE.start_sll_update_at_~head.base ULTIMATE.start_main_~s~0.base)) (.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 (bvsge ULTIMATE.start_sll_update_at_~index (_ bv0 32)) .cse5 .cse6 .cse7 .cse8 (= (bvadd (_ bv2 32) ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~len~0) .cse9 (= ULTIMATE.start_main_~expected~0 (_ bv2 32)) .cse10 .cse11 (= (_ bv2 32) |ULTIMATE.start_sll_get_data_at_#res|) .cse12 (not (bvsge (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0) (_ bv0 32))) .cse13 .cse14 (= (_ bv2 32) .cse15)) (let ((.cse19 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse17 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse20 (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) .cse19))) (and .cse0 .cse1 .cse2 .cse3 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32)) .cse4 (exists ((ULTIMATE.start_main_~i~0 (_ BitVec 32))) (let ((.cse16 (bvmul (_ bv2 32) ULTIMATE.start_main_~i~0))) (and (= (bvadd (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset) (_ bv1 32) .cse16) (bvmul (_ bv2 32) ULTIMATE.start_main_~expected~0)) (= (bvadd (_ bv1 32) .cse16) ULTIMATE.start_main_~expected~0)))) (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse17) ULTIMATE.start_sll_create_~head~0.base)) (= (_ bv3 32) |ULTIMATE.start_sll_get_data_at_#res|) (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse17) (_ bv0 32)) (= (_ bv3 32) .cse15) .cse5 (= ULTIMATE.start_main_~len~0 (_ bv2 32)) .cse6 .cse7 .cse8 .cse9 .cse10 (= (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) ULTIMATE.start_main_~len~0) (= .cse18 (bvadd (_ bv1 32) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) .cse19)) .cse20))) (= .cse20 (_ bv0 32)) (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)))) .cse11 .cse12 .cse13 .cse14)))))) [2021-10-16 03:13:46,092 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:13:46,102 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) [2021-10-16 03:13:46,106 INFO L168 Benchmark]: Toolchain (without parser) took 96343.01 ms. Allocated memory was 60.8 MB in the beginning and 130.0 MB in the end (delta: 69.2 MB). Free memory was 39.2 MB in the beginning and 53.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 83.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,106 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:46,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.88 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 36.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.66 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 34.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,107 INFO L168 Benchmark]: Boogie Preprocessor took 83.19 ms. Allocated memory is still 60.8 MB. Free memory was 34.0 MB in the beginning and 32.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,108 INFO L168 Benchmark]: RCFGBuilder took 622.54 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 32.1 MB in the beginning and 58.4 MB in the end (delta: -26.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,108 INFO L168 Benchmark]: TraceAbstraction took 94924.49 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 58.0 MB in the beginning and 53.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,111 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 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 624.88 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 36.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.66 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 34.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.19 ms. Allocated memory is still 60.8 MB. Free memory was 34.0 MB in the beginning and 32.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 622.54 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 32.1 MB in the beginning and 58.4 MB in the end (delta: -26.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 94924.49 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 58.0 MB in the beginning and 53.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 80.1 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: 94852.1ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 42.2ms, AutomataDifference: 20070.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7598.8ms, InitialAbstractionConstructionTime: 10.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 253 SDtfs, 1689 SDslu, 1116 SDs, 0 SdLazy, 1705 SolverSat, 615 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7212.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1809 GetRequests, 1527 SyntacticMatches, 6 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3428 ImplicationChecksByTransitivity, 43754.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=9, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 209.3ms AutomataMinimizationTime, 12 MinimizatonAttempts, 138 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 32 NumberOfFragments, 2178 HoareAnnotationTreeSize, 12 FomulaSimplifications, 8272 FormulaSimplificationTreeSizeReduction, 396.9ms HoareSimplificationTime, 12 FomulaSimplificationsInter, 615 FormulaSimplificationTreeSizeReductionInter, 7193.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 385.9ms SsaConstructionTime, 2784.6ms SatisfiabilityAnalysisTime, 49442.9ms InterpolantComputationTime, 886 NumberOfCodeBlocks, 847 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1720 ConstructedInterpolants, 41 QuantifiedInterpolants, 12171 SizeOfPredicates, 261 NumberOfNonLiveVariables, 3323 ConjunctsInSsa, 368 ConjunctsInUnsatCore, 52 InterpolantComputations, 12 PerfectInterpolantSequences, 772/1042 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. [2021-10-16 03:13:46,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4873cdc4-5920-40eb-87fd-283e142bbad1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...