./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b595fa05a1614340785d09d23c14605d58462277 ....................................................................................................................................................................................................................................................................................................................................................... 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_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b595fa05a1614340785d09d23c14605d58462277 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:03:13,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:03:13,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:03:13,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:03:13,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:03:13,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:03:13,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:03:13,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:03:13,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:03:13,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:03:13,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:03:13,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:03:13,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:03:13,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:03:13,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:03:13,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:03:13,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:03:13,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:03:13,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:03:13,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:03:13,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:03:13,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:03:13,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:03:13,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:03:13,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:03:13,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:03:13,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:03:13,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:03:13,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:03:13,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:03:13,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:03:13,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:03:13,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:03:13,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:03:13,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:03:13,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:03:13,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:03:13,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:03:13,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:03:13,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:03:13,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:03:13,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:03:13,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:03:13,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:03:13,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:03:13,473 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:03:13,474 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:03:13,474 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:03:13,474 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:03:13,474 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:03:13,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:03:13,475 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:03:13,475 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:03:13,475 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:03:13,475 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:03:13,476 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:03:13,476 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:03:13,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:03:13,477 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:03:13,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:03:13,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:03:13,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:03:13,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:03:13,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:03:13,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:03:13,478 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:03:13,479 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:03:13,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:03:13,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:03:13,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:03:13,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:03:13,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:03:13,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:03:13,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:03:13,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:03:13,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:03:13,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:03:13,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:03:13,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:03:13,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:03:13,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:03:13,485 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_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b595fa05a1614340785d09d23c14605d58462277 [2021-10-13 07:03:13,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:03:13,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:03:13,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:03:13,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:03:13,810 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:03:13,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2021-10-13 07:03:13,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data/c07cb7c7f/f628945df912461fb3217e5c18322263/FLAG8c669eb94 [2021-10-13 07:03:14,540 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:03:14,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2021-10-13 07:03:14,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data/c07cb7c7f/f628945df912461fb3217e5c18322263/FLAG8c669eb94 [2021-10-13 07:03:14,796 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data/c07cb7c7f/f628945df912461fb3217e5c18322263 [2021-10-13 07:03:14,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:03:14,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:03:14,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:03:14,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:03:14,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:03:14,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:14" (1/1) ... [2021-10-13 07:03:14,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70df38f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:14, skipping insertion in model container [2021-10-13 07:03:14,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:14" (1/1) ... [2021-10-13 07:03:14,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:03:14,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:03:15,171 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_f97fee19-e44c-4c29-a4e2-e522dc137b6d/sv-benchmarks/c/eca-rers2012/Problem14_label26.c[6725,6738] [2021-10-13 07:03:15,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:03:15,387 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:03:15,429 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_f97fee19-e44c-4c29-a4e2-e522dc137b6d/sv-benchmarks/c/eca-rers2012/Problem14_label26.c[6725,6738] [2021-10-13 07:03:15,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:03:15,591 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:03:15,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15 WrapperNode [2021-10-13 07:03:15,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:03:15,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:03:15,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:03:15,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:03:15,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:03:15,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:03:15,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:03:15,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:03:15,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:03:15,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:03:15,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:03:15,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:03:15,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (1/1) ... [2021-10-13 07:03:15,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:03:15,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:03:15,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:03:15,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:03:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:03:29,593 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:03:29,593 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:03:29,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:29 BoogieIcfgContainer [2021-10-13 07:03:29,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:03:29,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:03:29,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:03:29,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:03:29,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:03:14" (1/3) ... [2021-10-13 07:03:29,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be9c166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:29, skipping insertion in model container [2021-10-13 07:03:29,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:15" (2/3) ... [2021-10-13 07:03:29,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be9c166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:29, skipping insertion in model container [2021-10-13 07:03:29,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:29" (3/3) ... [2021-10-13 07:03:29,607 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label26.c [2021-10-13 07:03:29,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:03:29,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:03:29,669 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:03:29,676 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:03:29,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:03:29,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:03:29,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:29,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:03:29,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:29,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:29,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1065584302, now seen corresponding path program 1 times [2021-10-13 07:03:29,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:03:29,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395956051] [2021-10-13 07:03:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:29,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:03:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:03:29,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:03:29,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395956051] [2021-10-13 07:03:29,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395956051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:29,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:29,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:03:29,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197305030] [2021-10-13 07:03:29,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:29,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:03:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:29,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:29,933 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:30,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:30,010 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-10-13 07:03:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:30,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-13 07:03:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:30,019 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:03:30,019 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:03:30,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:03:30,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-13 07:03:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 07:03:30,052 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-13 07:03:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:30,052 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 07:03:30,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:30,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 07:03:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:03:30,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:30,054 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-13 07:03:30,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:03:30,054 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:30,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:30,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1864470743, now seen corresponding path program 1 times [2021-10-13 07:03:30,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:03:30,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805329876] [2021-10-13 07:03:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:30,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:03:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:03:30,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:03:30,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805329876] [2021-10-13 07:03:30,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805329876] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:03:30,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939897327] [2021-10-13 07:03:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:30,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:03:30,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:03:30,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:03:30,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:03:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:30,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:03:30,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:04:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:04:05,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:20,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:07:20,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [39674952] [2021-10-13 07:07:20,821 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:07:20,821 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:07:20,826 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:07:20,831 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:07:20,832 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:07:20,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:20,872 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:07:20,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:20,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:07:20,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:07:20,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:20,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:07:20,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 07:07:20,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:20,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:20,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:20,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:07:20,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:20,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:07:20,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:20,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:07:20,932 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:07:20,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:20,966 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:20,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:20,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 07:07:20,971 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:07:20,971 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:149, output treesize:152 [2021-10-13 07:07:20,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:21,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:21,174 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_10| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:07:21,185 INFO L168 Benchmark]: Toolchain (without parser) took 246376.91 ms. Allocated memory was 88.1 MB in the beginning and 1.9 GB in the end (delta: 1.9 GB). Free memory was 50.0 MB in the beginning and 940.7 MB in the end (delta: -890.7 MB). Peak memory consumption was 964.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:21,188 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:07:21,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.48 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 49.8 MB in the beginning and 77.9 MB in the end (delta: -28.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:21,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.71 ms. Allocated memory is still 123.7 MB. Free memory was 77.9 MB in the beginning and 68.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:21,192 INFO L168 Benchmark]: Boogie Preprocessor took 122.87 ms. Allocated memory is still 123.7 MB. Free memory was 68.4 MB in the beginning and 62.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:21,193 INFO L168 Benchmark]: RCFGBuilder took 13744.61 ms. Allocated memory was 123.7 MB in the beginning and 501.2 MB in the end (delta: 377.5 MB). Free memory was 62.5 MB in the beginning and 353.1 MB in the end (delta: -290.6 MB). Peak memory consumption was 284.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:21,194 INFO L168 Benchmark]: TraceAbstraction took 231583.82 ms. Allocated memory was 501.2 MB in the beginning and 1.9 GB in the end (delta: 1.4 GB). Free memory was 352.0 MB in the beginning and 940.7 MB in the end (delta: -588.7 MB). Peak memory consumption was 853.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:21,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 784.48 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 49.8 MB in the beginning and 77.9 MB in the end (delta: -28.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 134.71 ms. Allocated memory is still 123.7 MB. Free memory was 77.9 MB in the beginning and 68.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 122.87 ms. Allocated memory is still 123.7 MB. Free memory was 68.4 MB in the beginning and 62.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13744.61 ms. Allocated memory was 123.7 MB in the beginning and 501.2 MB in the end (delta: 377.5 MB). Free memory was 62.5 MB in the beginning and 353.1 MB in the end (delta: -290.6 MB). Peak memory consumption was 284.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 231583.82 ms. Allocated memory was 501.2 MB in the beginning and 1.9 GB in the end (delta: 1.4 GB). Free memory was 352.0 MB in the beginning and 940.7 MB in the end (delta: -588.7 MB). Peak memory consumption was 853.1 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_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:07:21,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:07:23,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:07:23,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:07:23,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:07:23,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:07:23,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:07:23,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:07:23,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:07:23,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:07:23,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:07:23,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:07:23,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:07:23,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:07:23,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:07:23,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:07:23,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:07:23,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:07:23,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:07:23,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:07:23,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:07:23,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:07:23,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:07:23,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:07:23,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:07:23,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:07:23,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:07:23,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:07:23,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:07:23,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:07:23,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:07:23,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:07:23,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:07:23,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:07:23,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:07:23,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:07:23,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:07:23,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:07:23,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:07:23,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:07:23,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:07:23,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:07:23,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:07:23,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:07:23,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:07:23,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:07:23,707 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:07:23,707 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:07:23,707 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:07:23,708 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:07:23,708 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:07:23,708 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:07:23,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:07:23,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:07:23,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:07:23,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:07:23,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:07:23,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:07:23,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:07:23,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:07:23,711 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:07:23,711 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:07:23,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:07:23,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:07:23,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:07:23,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:07:23,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:07:23,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:07:23,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:07:23,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:07:23,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:07:23,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:07:23,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:07:23,714 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:07:23,714 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:07:23,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:07:23,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:07:23,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:07:23,715 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_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b595fa05a1614340785d09d23c14605d58462277 [2021-10-13 07:07:24,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:07:24,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:07:24,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:07:24,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:07:24,107 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:07:24,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2021-10-13 07:07:24,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data/06c0250f0/4b2200ae119a463e95e9e7f06d5de6c6/FLAG70f6ea38b [2021-10-13 07:07:24,833 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:07:24,833 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2021-10-13 07:07:24,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data/06c0250f0/4b2200ae119a463e95e9e7f06d5de6c6/FLAG70f6ea38b [2021-10-13 07:07:25,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/data/06c0250f0/4b2200ae119a463e95e9e7f06d5de6c6 [2021-10-13 07:07:25,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:07:25,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:07:25,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:07:25,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:07:25,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:07:25,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:25,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11083dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25, skipping insertion in model container [2021-10-13 07:07:25,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:25,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:07:25,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:07:25,368 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_f97fee19-e44c-4c29-a4e2-e522dc137b6d/sv-benchmarks/c/eca-rers2012/Problem14_label26.c[6725,6738] [2021-10-13 07:07:25,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:07:25,663 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:07:25,694 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_f97fee19-e44c-4c29-a4e2-e522dc137b6d/sv-benchmarks/c/eca-rers2012/Problem14_label26.c[6725,6738] [2021-10-13 07:07:25,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:07:25,869 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:07:25,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25 WrapperNode [2021-10-13 07:07:25,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:07:25,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:07:25,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:07:25,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:07:25,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:25,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:25,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:07:25,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:07:25,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:07:25,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:07:25,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:25,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:26,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:26,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:26,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:26,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:26,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:26,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:07:26,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:07:26,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:07:26,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:07:26,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (1/1) ... [2021-10-13 07:07:26,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:07:26,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:26,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:07:26,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:07:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:07:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:07:26,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:07:26,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:07:29,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:07:29,669 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:07:29,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:29 BoogieIcfgContainer [2021-10-13 07:07:29,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:07:29,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:07:29,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:07:29,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:07:29,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:07:25" (1/3) ... [2021-10-13 07:07:29,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577053e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:29, skipping insertion in model container [2021-10-13 07:07:29,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:25" (2/3) ... [2021-10-13 07:07:29,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577053e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:29, skipping insertion in model container [2021-10-13 07:07:29,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:29" (3/3) ... [2021-10-13 07:07:29,680 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label26.c [2021-10-13 07:07:29,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:07:29,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:07:29,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:07:29,742 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:07:29,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:07:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 07:07:29,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:29,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:29,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:29,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:29,782 INFO L82 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2021-10-13 07:07:29,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:29,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088666656] [2021-10-13 07:07:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:29,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:29,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:29,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:29,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:07:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:29,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:07:29,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:30,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:30,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:07:30,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088666656] [2021-10-13 07:07:30,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088666656] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:30,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:30,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:07:30,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910903284] [2021-10-13 07:07:30,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:07:30,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:07:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:07:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:07:30,630 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:38,335 INFO L93 Difference]: Finished difference Result 866 states and 1574 transitions. [2021-10-13 07:07:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:07:38,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 66 [2021-10-13 07:07:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:38,355 INFO L225 Difference]: With dead ends: 866 [2021-10-13 07:07:38,355 INFO L226 Difference]: Without dead ends: 538 [2021-10-13 07:07:38,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:07:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-13 07:07:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 360. [2021-10-13 07:07:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2021-10-13 07:07:38,422 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 66 [2021-10-13 07:07:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:38,423 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2021-10-13 07:07:38,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2021-10-13 07:07:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-13 07:07:38,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:38,431 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:38,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:38,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:07:38,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:38,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1093648019, now seen corresponding path program 1 times [2021-10-13 07:07:38,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:38,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720833968] [2021-10-13 07:07:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:38,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:38,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:38,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:38,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:07:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:38,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:07:38,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:39,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:40,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:07:40,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720833968] [2021-10-13 07:07:40,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720833968] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:40,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:40,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:07:40,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573713256] [2021-10-13 07:07:40,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:07:40,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:07:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:07:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:07:40,213 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:44,639 INFO L93 Difference]: Finished difference Result 1430 states and 2032 transitions. [2021-10-13 07:07:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:07:44,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 145 [2021-10-13 07:07:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:44,646 INFO L225 Difference]: With dead ends: 1430 [2021-10-13 07:07:44,646 INFO L226 Difference]: Without dead ends: 1072 [2021-10-13 07:07:44,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:07:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-13 07:07:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-10-13 07:07:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.315592903828198) internal successors, (1409), 1071 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1409 transitions. [2021-10-13 07:07:44,699 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1409 transitions. Word has length 145 [2021-10-13 07:07:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:44,700 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1409 transitions. [2021-10-13 07:07:44,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1409 transitions. [2021-10-13 07:07:44,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-13 07:07:44,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:44,708 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:44,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:07:44,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:07:44,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:44,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:44,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1271856538, now seen corresponding path program 1 times [2021-10-13 07:07:44,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:44,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342508625] [2021-10-13 07:07:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:44,927 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:44,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:44,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:44,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:07:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:45,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:07:45,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:46,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:51,284 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:07:51,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342508625] [2021-10-13 07:07:51,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342508625] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:51,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:51,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:07:51,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021183721] [2021-10-13 07:07:51,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:07:51,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:07:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:07:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:07:51,288 INFO L87 Difference]: Start difference. First operand 1072 states and 1409 transitions. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:58,177 INFO L93 Difference]: Finished difference Result 2498 states and 3353 transitions. [2021-10-13 07:07:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:07:58,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 202 [2021-10-13 07:07:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:58,187 INFO L225 Difference]: With dead ends: 2498 [2021-10-13 07:07:58,187 INFO L226 Difference]: Without dead ends: 1606 [2021-10-13 07:07:58,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:07:58,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-13 07:07:58,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2021-10-13 07:07:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.3121495327102803) internal successors, (2106), 1605 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2106 transitions. [2021-10-13 07:07:58,234 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2106 transitions. Word has length 202 [2021-10-13 07:07:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:58,235 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 2106 transitions. [2021-10-13 07:07:58,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2106 transitions. [2021-10-13 07:07:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-10-13 07:07:58,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:58,242 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:58,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:58,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:07:58,457 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:58,458 INFO L82 PathProgramCache]: Analyzing trace with hash 2142917086, now seen corresponding path program 1 times [2021-10-13 07:07:58,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:58,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314336259] [2021-10-13 07:07:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:58,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:58,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:58,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:58,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:07:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:59,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:07:59,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-13 07:07:59,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:08:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-13 07:08:00,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:08:00,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314336259] [2021-10-13 07:08:00,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314336259] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:00,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:00,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:08:00,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850613534] [2021-10-13 07:08:00,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:08:00,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:08:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:08:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:08:00,142 INFO L87 Difference]: Start difference. First operand 1606 states and 2106 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:04,183 INFO L93 Difference]: Finished difference Result 4456 states and 6006 transitions. [2021-10-13 07:08:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:08:04,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 211 [2021-10-13 07:08:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:04,201 INFO L225 Difference]: With dead ends: 4456 [2021-10-13 07:08:04,201 INFO L226 Difference]: Without dead ends: 3030 [2021-10-13 07:08:04,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:08:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-13 07:08:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2318. [2021-10-13 07:08:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.2529132498921018) internal successors, (2903), 2317 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2903 transitions. [2021-10-13 07:08:04,271 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2903 transitions. Word has length 211 [2021-10-13 07:08:04,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:04,272 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2903 transitions. [2021-10-13 07:08:04,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:04,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2903 transitions. [2021-10-13 07:08:04,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-13 07:08:04,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:04,276 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:04,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:08:04,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:08:04,490 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:08:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1032338879, now seen corresponding path program 1 times [2021-10-13 07:08:04,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:08:04,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530943953] [2021-10-13 07:08:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:04,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:08:04,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:08:04,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:08:04,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:08:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:05,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:08:05,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:08:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:08:06,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:08:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:08:07,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:08:07,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530943953] [2021-10-13 07:08:07,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530943953] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:07,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:07,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:08:07,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397617084] [2021-10-13 07:08:07,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:08:07,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:08:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:08:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:08:07,726 INFO L87 Difference]: Start difference. First operand 2318 states and 2903 transitions. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:12,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:12,493 INFO L93 Difference]: Finished difference Result 4870 states and 6076 transitions. [2021-10-13 07:08:12,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:08:12,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 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 225 [2021-10-13 07:08:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:12,509 INFO L225 Difference]: With dead ends: 4870 [2021-10-13 07:08:12,510 INFO L226 Difference]: Without dead ends: 2674 [2021-10-13 07:08:12,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:08:12,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-10-13 07:08:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2318. [2021-10-13 07:08:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.096245144583513) internal successors, (2540), 2317 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2540 transitions. [2021-10-13 07:08:12,569 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2540 transitions. Word has length 225 [2021-10-13 07:08:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:12,570 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2540 transitions. [2021-10-13 07:08:12,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2540 transitions. [2021-10-13 07:08:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-10-13 07:08:12,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:12,578 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:12,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:08:12,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:08:12,792 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:08:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:12,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1466568101, now seen corresponding path program 1 times [2021-10-13 07:08:12,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:08:12,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823920374] [2021-10-13 07:08:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:12,795 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:08:12,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:08:12,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:08:12,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:08:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:13,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:08:13,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:08:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-10-13 07:08:15,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:08:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-10-13 07:08:19,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:08:19,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823920374] [2021-10-13 07:08:19,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823920374] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:19,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:19,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:08:19,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615340049] [2021-10-13 07:08:19,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:08:19,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:08:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:08:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:08:19,223 INFO L87 Difference]: Start difference. First operand 2318 states and 2540 transitions. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:23,246 INFO L93 Difference]: Finished difference Result 5168 states and 5694 transitions. [2021-10-13 07:08:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:08:23,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 370 [2021-10-13 07:08:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:23,264 INFO L225 Difference]: With dead ends: 5168 [2021-10-13 07:08:23,265 INFO L226 Difference]: Without dead ends: 3030 [2021-10-13 07:08:23,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:08:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-13 07:08:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2674. [2021-10-13 07:08:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.091657313879536) internal successors, (2918), 2673 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:23,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2918 transitions. [2021-10-13 07:08:23,351 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2918 transitions. Word has length 370 [2021-10-13 07:08:23,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:23,352 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2918 transitions. [2021-10-13 07:08:23,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:23,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2918 transitions. [2021-10-13 07:08:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2021-10-13 07:08:23,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:23,366 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:23,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:08:23,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:08:23,581 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:08:23,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:23,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1401574794, now seen corresponding path program 1 times [2021-10-13 07:08:23,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:08:23,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861313290] [2021-10-13 07:08:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:23,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:08:23,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:08:23,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:08:23,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:08:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:24,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:08:24,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:08:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 255 proven. 416 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-13 07:08:33,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:08:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 602 proven. 69 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-13 07:08:56,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:08:56,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861313290] [2021-10-13 07:08:56,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861313290] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:08:56,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1744800450] [2021-10-13 07:08:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:56,741 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:08:56,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:08:56,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:08:56,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 07:09:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:09:00,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:09:00,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:09:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-13 07:09:02,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:09:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-13 07:09:04,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1744800450] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:09:04,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:09:04,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [10, 10] total 25 [2021-10-13 07:09:04,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341861527] [2021-10-13 07:09:04,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:09:04,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:09:04,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:09:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:09:04,465 INFO L87 Difference]: Start difference. First operand 2674 states and 2918 transitions. Second operand has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:07,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:09:07,173 INFO L93 Difference]: Finished difference Result 5396 states and 5899 transitions. [2021-10-13 07:09:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:09:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 0 states have call successors, (0), 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 504 [2021-10-13 07:09:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:09:07,191 INFO L225 Difference]: With dead ends: 5396 [2021-10-13 07:09:07,191 INFO L226 Difference]: Without dead ends: 2902 [2021-10-13 07:09:07,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2014 GetRequests, 1990 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 980.8ms TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:09:07,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2021-10-13 07:09:07,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2674. [2021-10-13 07:09:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.0909090909090908) internal successors, (2916), 2673 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2916 transitions. [2021-10-13 07:09:07,256 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2916 transitions. Word has length 504 [2021-10-13 07:09:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:09:07,257 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2916 transitions. [2021-10-13 07:09:07,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2916 transitions. [2021-10-13 07:09:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-10-13 07:09:07,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:09:07,276 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:09:07,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:09:07,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:09:07,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:09:07,692 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:09:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:09:07,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1577044849, now seen corresponding path program 1 times [2021-10-13 07:09:07,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:09:07,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144731780] [2021-10-13 07:09:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:09:07,696 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:09:07,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:09:07,700 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:09:07,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:09:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:09:10,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:09:10,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:09:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 560 proven. 416 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-10-13 07:09:19,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:09:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 907 proven. 69 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-10-13 07:09:43,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:09:43,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144731780] [2021-10-13 07:09:43,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144731780] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:09:43,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1510371145] [2021-10-13 07:09:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:09:43,664 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:09:43,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:09:43,689 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:09:43,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 07:09:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:09:50,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:09:50,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:09:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2021-10-13 07:09:52,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:09:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2021-10-13 07:09:53,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1510371145] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:09:53,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:09:53,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10, 10] total 22 [2021-10-13 07:09:53,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503174708] [2021-10-13 07:09:53,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:09:53,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:09:53,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:09:53,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:09:53,974 INFO L87 Difference]: Start difference. First operand 2674 states and 2916 transitions. Second operand has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:09:55,606 INFO L93 Difference]: Finished difference Result 5218 states and 5701 transitions. [2021-10-13 07:09:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:09:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 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 583 [2021-10-13 07:09:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:09:55,619 INFO L225 Difference]: With dead ends: 5218 [2021-10-13 07:09:55,619 INFO L226 Difference]: Without dead ends: 2674 [2021-10-13 07:09:55,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2328 GetRequests, 2306 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 853.4ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:09:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-10-13 07:09:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2021-10-13 07:09:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.0830527497194165) internal successors, (2895), 2673 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2895 transitions. [2021-10-13 07:09:55,679 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2895 transitions. Word has length 583 [2021-10-13 07:09:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:09:55,680 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2895 transitions. [2021-10-13 07:09:55,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:55,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2895 transitions. [2021-10-13 07:09:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-10-13 07:09:55,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:09:55,687 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:09:55,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:09:55,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:09:56,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:09:56,100 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:09:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:09:56,101 INFO L82 PathProgramCache]: Analyzing trace with hash -158206931, now seen corresponding path program 1 times [2021-10-13 07:09:56,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:09:56,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374423530] [2021-10-13 07:09:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:09:56,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:09:56,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:09:56,104 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:09:56,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:10:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:01,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:10:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:10:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 554 proven. 210 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-10-13 07:10:07,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:10:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 764 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-10-13 07:10:35,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:10:35,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374423530] [2021-10-13 07:10:35,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374423530] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:10:35,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:10:35,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2021-10-13 07:10:35,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140799046] [2021-10-13 07:10:35,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:10:35,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:10:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:10:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:10:35,509 INFO L87 Difference]: Start difference. First operand 2674 states and 2895 transitions. Second operand has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:10:38,822 INFO L93 Difference]: Finished difference Result 5321 states and 5764 transitions. [2021-10-13 07:10:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:10:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 0 states have call successors, (0), 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 610 [2021-10-13 07:10:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:10:38,835 INFO L225 Difference]: With dead ends: 5321 [2021-10-13 07:10:38,835 INFO L226 Difference]: Without dead ends: 2787 [2021-10-13 07:10:38,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1218 GetRequests, 1203 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 545.5ms TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:10:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2021-10-13 07:10:38,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2787. [2021-10-13 07:10:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.0796841349605169) internal successors, (3008), 2786 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3008 transitions. [2021-10-13 07:10:38,893 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3008 transitions. Word has length 610 [2021-10-13 07:10:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:10:38,894 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 3008 transitions. [2021-10-13 07:10:38,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3008 transitions. [2021-10-13 07:10:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-10-13 07:10:38,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:10:38,901 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:10:38,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:10:39,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:10:39,116 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:10:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:10:39,116 INFO L82 PathProgramCache]: Analyzing trace with hash 84590118, now seen corresponding path program 1 times [2021-10-13 07:10:39,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:10:39,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958007356] [2021-10-13 07:10:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:39,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:10:39,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:10:39,120 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:10:39,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:10:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:46,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:10:46,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:10:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 650 proven. 353 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-10-13 07:10:47,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:10:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-10-13 07:10:50,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:10:50,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958007356] [2021-10-13 07:10:50,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958007356] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:10:50,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:10:50,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-13 07:10:50,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531934725] [2021-10-13 07:10:50,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:10:50,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:10:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:10:50,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:10:50,163 INFO L87 Difference]: Start difference. First operand 2787 states and 3008 transitions. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:10:53,794 INFO L93 Difference]: Finished difference Result 6284 states and 6843 transitions. [2021-10-13 07:10:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:10:53,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 637 [2021-10-13 07:10:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:10:53,810 INFO L225 Difference]: With dead ends: 6284 [2021-10-13 07:10:53,810 INFO L226 Difference]: Without dead ends: 3677 [2021-10-13 07:10:53,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1272 GetRequests, 1269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:10:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-10-13 07:10:53,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3677. [2021-10-13 07:10:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3676 states have (on average 1.0745375408052231) internal successors, (3950), 3676 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 3950 transitions. [2021-10-13 07:10:53,880 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 3950 transitions. Word has length 637 [2021-10-13 07:10:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:10:53,881 INFO L470 AbstractCegarLoop]: Abstraction has 3677 states and 3950 transitions. [2021-10-13 07:10:53,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 3950 transitions. [2021-10-13 07:10:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2021-10-13 07:10:53,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:10:53,890 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:10:53,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:10:54,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:10:54,104 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:10:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:10:54,104 INFO L82 PathProgramCache]: Analyzing trace with hash -476160545, now seen corresponding path program 1 times [2021-10-13 07:10:54,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:10:54,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845618818] [2021-10-13 07:10:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:54,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:10:54,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:10:54,108 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:10:54,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:11:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:01,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:11:01,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:11:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1857 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2021-10-13 07:11:03,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:11:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1857 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2021-10-13 07:11:04,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:11:04,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845618818] [2021-10-13 07:11:04,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845618818] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:04,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:11:04,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:11:04,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495335351] [2021-10-13 07:11:04,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:11:04,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:11:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:11:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:11:04,689 INFO L87 Difference]: Start difference. First operand 3677 states and 3950 transitions. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:07,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:07,261 INFO L93 Difference]: Finished difference Result 7886 states and 8489 transitions. [2021-10-13 07:11:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:07,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 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 792 [2021-10-13 07:11:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:07,286 INFO L225 Difference]: With dead ends: 7886 [2021-10-13 07:11:07,286 INFO L226 Difference]: Without dead ends: 4389 [2021-10-13 07:11:07,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1580 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:11:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2021-10-13 07:11:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4211. [2021-10-13 07:11:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4210 states have (on average 1.057482185273159) internal successors, (4452), 4210 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 4452 transitions. [2021-10-13 07:11:07,360 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 4452 transitions. Word has length 792 [2021-10-13 07:11:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:07,361 INFO L470 AbstractCegarLoop]: Abstraction has 4211 states and 4452 transitions. [2021-10-13 07:11:07,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:07,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 4452 transitions. [2021-10-13 07:11:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2021-10-13 07:11:07,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:07,373 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:11:07,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:11:07,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:11:07,596 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:11:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:07,596 INFO L82 PathProgramCache]: Analyzing trace with hash 318517462, now seen corresponding path program 1 times [2021-10-13 07:11:07,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:11:07,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954525655] [2021-10-13 07:11:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:07,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:11:07,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:11:07,600 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:11:07,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:11:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:15,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:11:15,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:11:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 0 proven. 2024 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-13 07:11:17,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:11:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 1387 proven. 64 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-13 07:11:22,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:11:22,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954525655] [2021-10-13 07:11:22,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954525655] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:11:22,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [201101095] [2021-10-13 07:11:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:22,410 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:11:22,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:11:22,412 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:11:22,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-13 07:11:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:33,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:11:33,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:11:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-10-13 07:11:35,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:11:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-10-13 07:11:36,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [201101095] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:36,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:11:36,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6, 5] total 12 [2021-10-13 07:11:36,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563421311] [2021-10-13 07:11:36,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:11:36,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:11:36,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:11:36,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:11:36,861 INFO L87 Difference]: Start difference. First operand 4211 states and 4452 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:39,123 INFO L93 Difference]: Finished difference Result 8954 states and 9472 transitions. [2021-10-13 07:11:39,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:39,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 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 887 [2021-10-13 07:11:39,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:39,140 INFO L225 Difference]: With dead ends: 8954 [2021-10-13 07:11:39,141 INFO L226 Difference]: Without dead ends: 4923 [2021-10-13 07:11:39,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3544 GetRequests, 3534 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 286.9ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:11:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2021-10-13 07:11:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4567. [2021-10-13 07:11:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4567 states, 4566 states have (on average 1.0492772667542707) internal successors, (4791), 4566 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 4791 transitions. [2021-10-13 07:11:39,209 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 4791 transitions. Word has length 887 [2021-10-13 07:11:39,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:39,210 INFO L470 AbstractCegarLoop]: Abstraction has 4567 states and 4791 transitions. [2021-10-13 07:11:39,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 4791 transitions. [2021-10-13 07:11:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2021-10-13 07:11:39,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:39,223 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:11:39,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:11:39,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:11:39,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:11:39,648 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:11:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash 539154926, now seen corresponding path program 1 times [2021-10-13 07:11:39,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:11:39,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656140413] [2021-10-13 07:11:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:39,654 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:11:39,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:11:39,658 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:11:39,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:11:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:48,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:11:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:11:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 511 proven. 2165 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-13 07:11:50,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:11:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 2015 proven. 88 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-13 07:11:55,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:11:55,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656140413] [2021-10-13 07:11:55,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656140413] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:11:55,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [266380119] [2021-10-13 07:11:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:55,437 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:11:55,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:11:55,439 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:11:55,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-13 07:12:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:12:07,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:12:07,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:12:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-10-13 07:12:10,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:12:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-10-13 07:12:13,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [266380119] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:12:13,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:12:13,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 5] total 18 [2021-10-13 07:12:13,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313401172] [2021-10-13 07:12:13,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:12:13,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:12:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:12:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:12:13,288 INFO L87 Difference]: Start difference. First operand 4567 states and 4791 transitions. Second operand has 10 states, 10 states have (on average 29.2) internal successors, (292), 10 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:12:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:12:16,476 INFO L93 Difference]: Finished difference Result 9249 states and 9698 transitions. [2021-10-13 07:12:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:12:16,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 29.2) internal successors, (292), 10 states have internal predecessors, (292), 0 states have call successors, (0), 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 975 [2021-10-13 07:12:16,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:12:16,489 INFO L225 Difference]: With dead ends: 9249 [2021-10-13 07:12:16,489 INFO L226 Difference]: Without dead ends: 4862 [2021-10-13 07:12:16,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3898 GetRequests, 3881 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 617.0ms TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:12:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-10-13 07:12:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4389. [2021-10-13 07:12:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4389 states, 4388 states have (on average 1.0437556973564266) internal successors, (4580), 4388 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:12:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 4580 transitions. [2021-10-13 07:12:16,559 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 4580 transitions. Word has length 975 [2021-10-13 07:12:16,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:12:16,560 INFO L470 AbstractCegarLoop]: Abstraction has 4389 states and 4580 transitions. [2021-10-13 07:12:16,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.2) internal successors, (292), 10 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:12:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 4580 transitions. [2021-10-13 07:12:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2021-10-13 07:12:16,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:12:16,573 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:12:16,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:12:16,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:12:17,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:12:17,001 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:12:17,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:12:17,001 INFO L82 PathProgramCache]: Analyzing trace with hash 292527049, now seen corresponding path program 1 times [2021-10-13 07:12:17,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:12:17,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144701653] [2021-10-13 07:12:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:12:17,004 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:12:17,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:12:17,005 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:12:17,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:12:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:12:26,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:12:26,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:12:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 511 proven. 2175 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-13 07:12:29,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:12:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 2023 proven. 90 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-13 07:12:33,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:12:33,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144701653] [2021-10-13 07:12:33,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144701653] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:12:33,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1952299698] [2021-10-13 07:12:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:12:33,691 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:12:33,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:12:33,692 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:12:33,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-13 07:12:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:12:47,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:12:47,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:12:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 2546 trivial. 0 not checked. [2021-10-13 07:12:49,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:12:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 2546 trivial. 0 not checked. [2021-10-13 07:12:51,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1952299698] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:12:51,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:12:51,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 5] total 12 [2021-10-13 07:12:51,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536273989] [2021-10-13 07:12:51,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:12:51,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:12:51,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:12:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:12:51,317 INFO L87 Difference]: Start difference. First operand 4389 states and 4580 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:12:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:12:53,687 INFO L93 Difference]: Finished difference Result 9685 states and 10116 transitions. [2021-10-13 07:12:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:12:53,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 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 977 [2021-10-13 07:12:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:12:53,689 INFO L225 Difference]: With dead ends: 9685 [2021-10-13 07:12:53,689 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:12:53,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3906 GetRequests, 3895 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 306.2ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:12:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:12:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:12:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:12:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:12:53,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 977 [2021-10-13 07:12:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:12:53,697 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:12:53,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:12:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:12:53,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:12:53,700 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:12:53,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:12:53,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:12:54,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:12:54,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:12:54,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:12:54,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:12:54,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:12:55,529 INFO L857 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-10-13 07:12:55,529 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-10-13 07:12:55,529 INFO L857 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-10-13 07:12:55,529 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-10-13 07:12:55,529 INFO L857 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-10-13 07:12:55,529 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,529 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,529 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-13 07:12:55,530 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-13 07:12:55,531 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-10-13 07:12:55,532 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-10-13 07:12:55,532 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-10-13 07:12:55,532 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,532 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,532 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,532 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-10-13 07:12:55,532 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-10-13 07:12:55,533 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-13 07:12:55,533 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-13 07:12:55,533 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-10-13 07:12:55,533 INFO L857 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-10-13 07:12:55,533 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-10-13 07:12:55,533 INFO L857 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-10-13 07:12:55,534 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,534 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,534 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,534 INFO L857 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-10-13 07:12:55,534 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-10-13 07:12:55,534 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-10-13 07:12:55,535 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-10-13 07:12:55,535 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-10-13 07:12:55,535 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-10-13 07:12:55,535 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-10-13 07:12:55,535 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-10-13 07:12:55,535 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,536 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,536 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,536 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-10-13 07:12:55,536 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-13 07:12:55,536 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-10-13 07:12:55,536 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-13 07:12:55,536 INFO L857 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-10-13 07:12:55,537 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-10-13 07:12:55,537 INFO L857 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-10-13 07:12:55,537 INFO L857 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-10-13 07:12:55,537 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-10-13 07:12:55,537 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,537 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,537 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,537 INFO L857 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-13 07:12:55,538 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-13 07:12:55,539 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 212) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-10-13 07:12:55,540 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-10-13 07:12:55,541 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-13 07:12:55,542 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-13 07:12:55,543 INFO L857 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-10-13 07:12:55,543 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-10-13 07:12:55,543 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-10-13 07:12:55,543 INFO L857 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-10-13 07:12:55,543 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-10-13 07:12:55,543 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,543 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,544 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,544 INFO L857 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-10-13 07:12:55,544 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-10-13 07:12:55,544 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-10-13 07:12:55,544 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-13 07:12:55,544 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-13 07:12:55,544 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-13 07:12:55,545 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-10-13 07:12:55,546 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:12:55,547 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-10-13 07:12:55,548 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-13 07:12:55,548 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-10-13 07:12:55,548 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-10-13 07:12:55,548 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-10-13 07:12:55,548 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,548 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,548 INFO L853 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse5 (= (_ bv8 32) ~a21~0)) (.cse3 (= (_ bv8 32) ~a15~0)) (.cse6 (not (= ~a21~0 (_ bv9 32)))) (.cse1 (bvsle ~a12~0 (_ bv4294967253 32))) (.cse4 (= (_ bv1 32) ~a24~0)) (.cse2 (= ~a15~0 (_ bv9 32)))) (or (let ((.cse0 (not (bvsge (_ bv11 32) ~a12~0)))) (and (or (not (= (_ bv7 32) ~a21~0)) .cse0) (not .cse1) (or (not (= (_ bv6 32) ~a21~0)) .cse0) .cse2)) (and (or (not (bvslt (_ bv80 32) ~a12~0)) (not .cse3)) (not .cse2) (or (not .cse4) (not .cse5) (not (= (_ bv6 32) ~a15~0)))) (and .cse5 .cse2) (and (bvsge (_ bv80 32) ~a12~0) (bvslt (_ bv11 32) ~a12~0)) (and .cse6 .cse3) (and .cse6 .cse1 .cse4 .cse2))) [2021-10-13 07:12:55,548 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-10-13 07:12:55,549 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-10-13 07:12:55,549 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-13 07:12:55,549 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-13 07:12:55,549 INFO L857 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-10-13 07:12:55,549 INFO L857 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-10-13 07:12:55,549 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-10-13 07:12:55,549 INFO L857 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L860 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-10-13 07:12:55,550 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,551 INFO L857 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L853 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse5 (= (_ bv8 32) ~a21~0)) (.cse3 (= (_ bv8 32) ~a15~0)) (.cse6 (not (= ~a21~0 (_ bv9 32)))) (.cse1 (bvsle ~a12~0 (_ bv4294967253 32))) (.cse4 (= (_ bv1 32) ~a24~0)) (.cse2 (= ~a15~0 (_ bv9 32)))) (or (let ((.cse0 (not (bvsge (_ bv11 32) ~a12~0)))) (and (or (not (= (_ bv7 32) ~a21~0)) .cse0) (not .cse1) (or (not (= (_ bv6 32) ~a21~0)) .cse0) .cse2)) (and (or (not (bvslt (_ bv80 32) ~a12~0)) (not .cse3)) (not .cse2) (or (not .cse4) (not .cse5) (not (= (_ bv6 32) ~a15~0)))) (and .cse5 .cse2) (and (bvsge (_ bv80 32) ~a12~0) (bvslt (_ bv11 32) ~a12~0)) (and .cse6 .cse3) (and .cse6 .cse1 .cse4 .cse2))) [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:12:55,552 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-10-13 07:12:55,553 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-13 07:12:55,553 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 07:12:55,553 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-13 07:12:55,557 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:12:55,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:12:55 BoogieIcfgContainer [2021-10-13 07:12:55,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:12:55,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:12:55,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:12:55,577 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:12:55,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:29" (3/4) ... [2021-10-13 07:12:55,580 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:12:55,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:12:55,605 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:12:55,607 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:12:55,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:12:55,742 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:12:55,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:12:55,743 INFO L168 Benchmark]: Toolchain (without parser) took 330655.36 ms. Allocated memory was 73.4 MB in the beginning and 861.9 MB in the end (delta: 788.5 MB). Free memory was 51.5 MB in the beginning and 247.8 MB in the end (delta: -196.2 MB). Peak memory consumption was 713.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:55,744 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory is still 35.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:12:55,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.71 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 35.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:55,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.33 ms. Allocated memory is still 73.4 MB. Free memory was 35.2 MB in the beginning and 28.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:55,745 INFO L168 Benchmark]: Boogie Preprocessor took 140.35 ms. Allocated memory is still 73.4 MB. Free memory was 28.8 MB in the beginning and 50.0 MB in the end (delta: -21.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:55,745 INFO L168 Benchmark]: RCFGBuilder took 3547.63 ms. Allocated memory was 73.4 MB in the beginning and 113.2 MB in the end (delta: 39.8 MB). Free memory was 50.0 MB in the beginning and 69.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:55,746 INFO L168 Benchmark]: TraceAbstraction took 325902.25 ms. Allocated memory was 113.2 MB in the beginning and 861.9 MB in the end (delta: 748.7 MB). Free memory was 69.0 MB in the beginning and 133.8 MB in the end (delta: -64.8 MB). Peak memory consumption was 683.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:55,746 INFO L168 Benchmark]: Witness Printer took 165.63 ms. Allocated memory is still 861.9 MB. Free memory was 133.8 MB in the beginning and 247.8 MB in the end (delta: -114.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:55,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory is still 35.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 781.71 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 35.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 111.33 ms. Allocated memory is still 73.4 MB. Free memory was 35.2 MB in the beginning and 28.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 140.35 ms. Allocated memory is still 73.4 MB. Free memory was 28.8 MB in the beginning and 50.0 MB in the end (delta: -21.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3547.63 ms. Allocated memory was 73.4 MB in the beginning and 113.2 MB in the end (delta: 39.8 MB). Free memory was 50.0 MB in the beginning and 69.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 325902.25 ms. Allocated memory was 113.2 MB in the beginning and 861.9 MB in the end (delta: 748.7 MB). Free memory was 69.0 MB in the beginning and 133.8 MB in the end (delta: -64.8 MB). Peak memory consumption was 683.1 MB. Max. memory is 16.1 GB. * Witness Printer took 165.63 ms. Allocated memory is still 861.9 MB. Free memory was 133.8 MB in the beginning and 247.8 MB in the end (delta: -114.0 MB). Peak memory consumption was 5.5 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: 212]: 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, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 325823.1ms, OverallIterations: 14, TraceHistogramMax: 9, EmptinessCheckTime: 130.4ms, AutomataDifference: 53810.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1417.1ms, InitialAbstractionConstructionTime: 16.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1204 SDtfs, 3670 SDslu, 183 SDs, 0 SdLazy, 12043 SolverSat, 1463 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45920.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22188 GetRequests, 22070 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 3755.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4567occurred in iteration=12, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 794.7ms AutomataMinimizationTime, 14 MinimizatonAttempts, 2837 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 76 NumberOfFragments, 181 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6328 FormulaSimplificationTreeSizeReduction, 461.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 4908 FormulaSimplificationTreeSizeReductionInter, 949.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 503.4ms SsaConstructionTime, 4874.6ms SatisfiabilityAnalysisTime, 164964.2ms InterpolantComputationTime, 11110 NumberOfCodeBlocks, 11110 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 22182 ConstructedInterpolants, 0 QuantifiedInterpolants, 129901 SizeOfPredicates, 58 NumberOfNonLiveVariables, 12571 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 38 InterpolantComputations, 26 PerfectInterpolantSequences, 43519/51658 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: 30]: Loop Invariant Derived loop invariant: ((((((((!(7bv32 == a21) || !~bvsge32(11bv32, a12)) && !~bvsle32(a12, 4294967253bv32)) && (!(6bv32 == a21) || !~bvsge32(11bv32, a12))) && a15 == 9bv32) || (((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && ((!(1bv32 == a24) || !(8bv32 == a21)) || !(6bv32 == a15)))) || (8bv32 == a21 && a15 == 9bv32)) || (~bvsge32(80bv32, a12) && ~bvslt32(11bv32, a12))) || (!(a21 == 9bv32) && 8bv32 == a15)) || (((!(a21 == 9bv32) && ~bvsle32(a12, 4294967253bv32)) && 1bv32 == a24) && a15 == 9bv32) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((((!(7bv32 == a21) || !~bvsge32(11bv32, a12)) && !~bvsle32(a12, 4294967253bv32)) && (!(6bv32 == a21) || !~bvsge32(11bv32, a12))) && a15 == 9bv32) || (((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && ((!(1bv32 == a24) || !(8bv32 == a21)) || !(6bv32 == a15)))) || (8bv32 == a21 && a15 == 9bv32)) || (~bvsge32(80bv32, a12) && ~bvslt32(11bv32, a12))) || (!(a21 == 9bv32) && 8bv32 == a15)) || (((!(a21 == 9bv32) && ~bvsle32(a12, 4294967253bv32)) && 1bv32 == a24) && a15 == 9bv32) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:12:55,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97fee19-e44c-4c29-a4e2-e522dc137b6d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...