./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI --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 32adbfac5f3e3ea232180afd045da0027ca6d993 .................................................................................................................................................................................................................................................................................................................... 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_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI --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 32adbfac5f3e3ea232180afd045da0027ca6d993 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:30,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:30,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:30,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:30,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:30,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:30,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:30,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:30,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:30,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:30,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:30,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:30,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:30,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:30,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:30,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:30,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:30,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:30,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:30,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:30,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:30,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:30,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:30,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:30,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:30,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:30,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:30,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:30,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:30,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:30,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:30,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:30,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:30,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:30,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:30,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:30,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:30,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:30,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:30,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:30,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:30,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:30,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:30,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:30,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:30,579 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:30,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:30,579 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:30,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:30,580 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:30,580 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:30,580 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:30,581 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:30,581 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:30,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:30,581 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:30,582 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:30,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:30,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:30,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:30,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:30,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:30,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:30,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:30,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:30,585 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:30,585 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:30,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:30,585 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:30,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:30,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:30,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:30,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:30,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:30,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:30,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:30,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:30,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:30,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:30,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:30,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:30,589 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_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2021-10-11 02:22:30,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:30,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:30,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:30,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:30,927 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:30,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-11 02:22:31,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data/522aaa496/697d0dc6eb224acb95b5e47dce44679c/FLAGf6287170f [2021-10-11 02:22:31,571 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:31,572 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-11 02:22:31,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data/522aaa496/697d0dc6eb224acb95b5e47dce44679c/FLAGf6287170f [2021-10-11 02:22:31,961 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data/522aaa496/697d0dc6eb224acb95b5e47dce44679c [2021-10-11 02:22:31,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:31,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:31,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:31,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:31,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:31,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:31" (1/1) ... [2021-10-11 02:22:31,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db0228c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:31, skipping insertion in model container [2021-10-11 02:22:31,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:31" (1/1) ... [2021-10-11 02:22:31,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:32,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:32,210 WARN L226 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_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-11 02:22:32,214 WARN L226 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_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-11 02:22:32,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:32,226 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:32,253 WARN L226 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_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-11 02:22:32,254 WARN L226 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_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-11 02:22:32,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:32,273 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:32,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32 WrapperNode [2021-10-11 02:22:32,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:32,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:32,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:32,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:32,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:32,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:32,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:32,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:32,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... [2021-10-11 02:22:32,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:32,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:32,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:32,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:32,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:32,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:32,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:32,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:22:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:32,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:22:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:22:33,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:33,781 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 02:22:33,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:33 BoogieIcfgContainer [2021-10-11 02:22:33,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:33,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:33,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:33,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:33,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:31" (1/3) ... [2021-10-11 02:22:33,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d151e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:33, skipping insertion in model container [2021-10-11 02:22:33,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:32" (2/3) ... [2021-10-11 02:22:33,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d151e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:33, skipping insertion in model container [2021-10-11 02:22:33,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:33" (3/3) ... [2021-10-11 02:22:33,796 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2021-10-11 02:22:33,812 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:33,816 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:22:33,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:22:33,853 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:33,854 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:33,854 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:33,854 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:33,854 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:33,854 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:33,855 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:33,855 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 02:22:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:22:33,875 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:33,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:33,876 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:33,882 INFO L82 PathProgramCache]: Analyzing trace with hash -712779630, now seen corresponding path program 1 times [2021-10-11 02:22:33,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:33,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030774275] [2021-10-11 02:22:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:34,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030774275] [2021-10-11 02:22:34,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:34,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:34,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763309737] [2021-10-11 02:22:34,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:22:34,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:34,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:22:34,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:34,099 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-10-11 02:22:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:34,118 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-10-11 02:22:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:22:34,120 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:22:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:34,130 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:22:34,130 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:22:34,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:22:34,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:22:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:22:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:22:34,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-10-11 02:22:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:34,170 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:22:34,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:22:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:22:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:34,172 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:34,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:34,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:34,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:34,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:34,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1505041362, now seen corresponding path program 1 times [2021-10-11 02:22:34,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:34,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965074697] [2021-10-11 02:22:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:34,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:34,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:34,450 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:22:34,453 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:22:34,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:34,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:34 BoogieIcfgContainer [2021-10-11 02:22:34,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:34,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:34,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:34,508 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:34,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:33" (3/4) ... [2021-10-11 02:22:34,512 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:22:34,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:34,516 INFO L168 Benchmark]: Toolchain (without parser) took 2544.09 ms. Allocated memory is still 127.9 MB. Free memory was 92.6 MB in the beginning and 64.1 MB in the end (delta: 28.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:34,517 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 102.0 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:34,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.02 ms. Allocated memory is still 127.9 MB. Free memory was 92.4 MB in the beginning and 102.2 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:34,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.22 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 100.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:34,520 INFO L168 Benchmark]: Boogie Preprocessor took 34.19 ms. Allocated memory is still 127.9 MB. Free memory was 100.1 MB in the beginning and 98.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:34,521 INFO L168 Benchmark]: RCFGBuilder took 1420.13 ms. Allocated memory is still 127.9 MB. Free memory was 98.8 MB in the beginning and 94.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:34,522 INFO L168 Benchmark]: TraceAbstraction took 716.31 ms. Allocated memory is still 127.9 MB. Free memory was 93.5 MB in the beginning and 64.6 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:34,523 INFO L168 Benchmark]: Witness Printer took 7.83 ms. Allocated memory is still 127.9 MB. Free memory was 64.6 MB in the beginning and 64.1 MB in the end (delta: 451.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:34,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 102.0 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.02 ms. Allocated memory is still 127.9 MB. Free memory was 92.4 MB in the beginning and 102.2 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.22 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 100.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.19 ms. Allocated memory is still 127.9 MB. Free memory was 100.1 MB in the beginning and 98.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1420.13 ms. Allocated memory is still 127.9 MB. Free memory was 98.8 MB in the beginning and 94.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 716.31 ms. Allocated memory is still 127.9 MB. Free memory was 93.5 MB in the beginning and 64.6 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 7.83 ms. Allocated memory is still 127.9 MB. Free memory was 64.6 MB in the beginning and 64.1 MB in the end (delta: 451.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 76]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] float res = fmax_float(x, y); [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L76] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:37,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:37,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:37,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:37,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:37,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:37,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:37,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:37,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:37,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:37,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:37,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:37,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:37,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:37,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:37,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:37,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:37,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:37,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:37,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:37,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:37,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:37,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:37,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:37,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:37,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:37,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:37,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:37,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:37,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:37,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:37,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:37,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:37,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:37,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:37,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:37,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:37,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:37,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:37,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:37,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:37,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:22:37,334 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:37,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:37,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:37,336 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:37,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:37,337 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:37,337 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:37,337 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:37,337 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:37,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:37,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:37,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:37,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:37,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:37,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:37,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:37,342 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:37,342 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:22:37,342 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:22:37,343 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:37,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:37,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:37,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:37,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:37,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:22:37,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:37,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:37,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:37,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:37,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:37,346 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:22:37,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:22:37,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:37,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:37,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:37,347 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_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2021-10-11 02:22:37,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:37,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:37,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:37,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:37,784 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:37,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-11 02:22:37,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data/bc1fe5e95/2f1837bc68c84791ac361921e97b9380/FLAG25604aa8b [2021-10-11 02:22:38,419 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:38,420 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-11 02:22:38,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data/bc1fe5e95/2f1837bc68c84791ac361921e97b9380/FLAG25604aa8b [2021-10-11 02:22:38,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/data/bc1fe5e95/2f1837bc68c84791ac361921e97b9380 [2021-10-11 02:22:38,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:38,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:38,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:38,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:38,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:38,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646c51e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38, skipping insertion in model container [2021-10-11 02:22:38,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:38,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:39,050 WARN L226 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_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-11 02:22:39,066 WARN L226 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_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-11 02:22:39,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:39,118 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:39,172 WARN L226 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_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-11 02:22:39,174 WARN L226 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_42df68f6-665f-4d5d-a078-e982007d9c0b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-11 02:22:39,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:39,200 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:39,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39 WrapperNode [2021-10-11 02:22:39,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:39,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:39,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:39,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:39,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:39,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:39,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:39,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:39,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... [2021-10-11 02:22:39,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:39,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:39,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:39,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:39,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:22:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:22:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:39,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:22:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:22:40,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:40,038 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 02:22:40,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:40 BoogieIcfgContainer [2021-10-11 02:22:40,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:40,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:40,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:40,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:40,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:38" (1/3) ... [2021-10-11 02:22:40,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be116a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:40, skipping insertion in model container [2021-10-11 02:22:40,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:39" (2/3) ... [2021-10-11 02:22:40,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be116a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:40, skipping insertion in model container [2021-10-11 02:22:40,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:40" (3/3) ... [2021-10-11 02:22:40,051 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2021-10-11 02:22:40,066 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:40,069 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:22:40,080 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:22:40,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:40,114 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:40,114 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:40,115 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:40,115 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:40,115 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:40,115 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:40,115 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2021-10-11 02:22:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:22:40,130 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:40,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:40,131 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:40,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:40,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-11 02:22:40,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:40,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364163853] [2021-10-11 02:22:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:40,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:22:40,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:40,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:40,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364163853] [2021-10-11 02:22:40,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:40,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:40,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69507967] [2021-10-11 02:22:40,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:22:40,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:40,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:22:40,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:40,359 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2021-10-11 02:22:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:40,397 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-10-11 02:22:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:22:40,398 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 02:22:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:40,408 INFO L225 Difference]: With dead ends: 82 [2021-10-11 02:22:40,408 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 02:22:40,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:40,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 02:22:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-11 02:22:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:22:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-10-11 02:22:40,455 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-10-11 02:22:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:40,456 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-10-11 02:22:40,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:22:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-10-11 02:22:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:22:40,459 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:40,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:40,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,672 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:40,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-10-11 02:22:40,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:40,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958288362] [2021-10-11 02:22:40,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:40,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:40,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:40,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:40,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958288362] [2021-10-11 02:22:40,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:40,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:40,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851322852] [2021-10-11 02:22:40,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:40,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:40,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:40,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:40,865 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2021-10-11 02:22:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:40,935 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-10-11 02:22:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:22:40,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 02:22:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:40,939 INFO L225 Difference]: With dead ends: 82 [2021-10-11 02:22:40,939 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 02:22:40,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 02:22:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-11 02:22:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 02:22:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-11 02:22:40,960 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-10-11 02:22:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:40,963 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-11 02:22:40,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-11 02:22:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:22:40,965 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:40,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:41,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:22:41,183 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:41,184 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-11 02:22:41,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:41,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620708133] [2021-10-11 02:22:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:41,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:41,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:41,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620708133] [2021-10-11 02:22:41,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:41,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:41,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299881831] [2021-10-11 02:22:41,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:41,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:41,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:41,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:41,338 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2021-10-11 02:22:41,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:41,411 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-10-11 02:22:41,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:41,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-10-11 02:22:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:41,414 INFO L225 Difference]: With dead ends: 77 [2021-10-11 02:22:41,414 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 02:22:41,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 02:22:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-10-11 02:22:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:22:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 02:22:41,432 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-11 02:22:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:41,432 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 02:22:41,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 02:22:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:22:41,434 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:41,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:41,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:22:41,652 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:41,653 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2021-10-11 02:22:41,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:41,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470909970] [2021-10-11 02:22:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:41,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:41,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:41,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:41,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470909970] [2021-10-11 02:22:41,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:41,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:41,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354014383] [2021-10-11 02:22:41,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:41,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:41,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:41,768 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2021-10-11 02:22:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:41,839 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-10-11 02:22:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:41,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 02:22:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:41,843 INFO L225 Difference]: With dead ends: 79 [2021-10-11 02:22:41,843 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 02:22:41,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 02:22:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-11 02:22:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:22:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 02:22:41,856 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2021-10-11 02:22:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:41,859 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 02:22:41,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 02:22:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:22:41,861 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:41,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:42,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:22:42,077 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:42,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2021-10-11 02:22:42,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:42,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138160778] [2021-10-11 02:22:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:42,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:42,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:42,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:42,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138160778] [2021-10-11 02:22:42,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:42,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:42,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254101328] [2021-10-11 02:22:42,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:42,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:42,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:42,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:42,201 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2021-10-11 02:22:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:42,246 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-10-11 02:22:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:42,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-10-11 02:22:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:42,247 INFO L225 Difference]: With dead ends: 79 [2021-10-11 02:22:42,248 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 02:22:42,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 02:22:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-11 02:22:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:22:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 02:22:42,253 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2021-10-11 02:22:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:42,254 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 02:22:42,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 02:22:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:22:42,255 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:42,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:42,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:22:42,471 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:42,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:42,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-11 02:22:42,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:42,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352033553] [2021-10-11 02:22:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:42,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:22:42,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:42,636 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:42,637 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:42,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:42,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352033553] [2021-10-11 02:22:42,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:42,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:22:42,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674436878] [2021-10-11 02:22:42,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:22:42,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:42,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:22:42,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:42,714 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 7 states. [2021-10-11 02:22:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:43,057 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-10-11 02:22:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:22:43,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-10-11 02:22:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:43,059 INFO L225 Difference]: With dead ends: 149 [2021-10-11 02:22:43,060 INFO L226 Difference]: Without dead ends: 140 [2021-10-11 02:22:43,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:22:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-11 02:22:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-10-11 02:22:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 02:22:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-10-11 02:22:43,071 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-10-11 02:22:43,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:43,071 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-10-11 02:22:43,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:22:43,072 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-10-11 02:22:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:22:43,073 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:43,073 INFO L422 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] [2021-10-11 02:22:43,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:22:43,289 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:43,290 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-11 02:22:43,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:43,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310432692] [2021-10-11 02:22:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:43,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:22:43,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:43,427 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:43,427 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:43,452 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:43,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:43,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310432692] [2021-10-11 02:22:43,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:43,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:22:43,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194801919] [2021-10-11 02:22:43,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:22:43,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:43,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:22:43,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:22:43,613 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 9 states. [2021-10-11 02:22:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:44,446 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-10-11 02:22:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 02:22:44,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-10-11 02:22:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:44,448 INFO L225 Difference]: With dead ends: 180 [2021-10-11 02:22:44,448 INFO L226 Difference]: Without dead ends: 178 [2021-10-11 02:22:44,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:22:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-11 02:22:44,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-10-11 02:22:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 02:22:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-10-11 02:22:44,460 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-10-11 02:22:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:44,460 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-10-11 02:22:44,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:22:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-10-11 02:22:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:22:44,462 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:44,462 INFO L422 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] [2021-10-11 02:22:44,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:22:44,680 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:44,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-10-11 02:22:44,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:44,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046395181] [2021-10-11 02:22:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:44,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:22:44,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:44,816 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:44,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:44,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:44,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046395181] [2021-10-11 02:22:44,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:44,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:22:44,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484114327] [2021-10-11 02:22:44,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:22:44,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:44,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:22:44,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:44,892 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 7 states. [2021-10-11 02:22:45,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:45,448 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-10-11 02:22:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:22:45,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-10-11 02:22:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:45,450 INFO L225 Difference]: With dead ends: 166 [2021-10-11 02:22:45,451 INFO L226 Difference]: Without dead ends: 131 [2021-10-11 02:22:45,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:22:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-11 02:22:45,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-10-11 02:22:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 02:22:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-10-11 02:22:45,461 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-10-11 02:22:45,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:45,461 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-10-11 02:22:45,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:22:45,461 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-10-11 02:22:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:22:45,462 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:45,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:45,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:22:45,663 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-10-11 02:22:45,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:45,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453375041] [2021-10-11 02:22:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:45,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:45,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:45,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:45,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453375041] [2021-10-11 02:22:45,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:45,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:45,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887923192] [2021-10-11 02:22:45,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:45,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:45,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:45,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:45,797 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 4 states. [2021-10-11 02:22:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:45,889 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2021-10-11 02:22:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:45,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-10-11 02:22:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:45,891 INFO L225 Difference]: With dead ends: 133 [2021-10-11 02:22:45,891 INFO L226 Difference]: Without dead ends: 117 [2021-10-11 02:22:45,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-11 02:22:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 93. [2021-10-11 02:22:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 02:22:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 02:22:45,901 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-11 02:22:45,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:45,902 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 02:22:45,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 02:22:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:22:45,903 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:45,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:46,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:22:46,126 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:46,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-10-11 02:22:46,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:46,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946806595] [2021-10-11 02:22:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:46,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:46,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:46,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:46,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946806595] [2021-10-11 02:22:46,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:46,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:46,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312624292] [2021-10-11 02:22:46,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:46,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:46,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:46,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:46,250 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2021-10-11 02:22:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:46,271 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-11 02:22:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:46,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:22:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:46,273 INFO L225 Difference]: With dead ends: 96 [2021-10-11 02:22:46,273 INFO L226 Difference]: Without dead ends: 94 [2021-10-11 02:22:46,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-11 02:22:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-10-11 02:22:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 02:22:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 02:22:46,282 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-11 02:22:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:46,282 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 02:22:46,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 02:22:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:22:46,283 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:46,283 INFO L422 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] [2021-10-11 02:22:46,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:22:46,496 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:46,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1838896133, now seen corresponding path program 1 times [2021-10-11 02:22:46,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:46,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632145269] [2021-10-11 02:22:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:46,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:46,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:46,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:46,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632145269] [2021-10-11 02:22:46,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:46,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:46,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516614389] [2021-10-11 02:22:46,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:46,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:46,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:46,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:46,625 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 4 states. [2021-10-11 02:22:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:46,704 INFO L93 Difference]: Finished difference Result 139 states and 176 transitions. [2021-10-11 02:22:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:46,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-10-11 02:22:46,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:46,706 INFO L225 Difference]: With dead ends: 139 [2021-10-11 02:22:46,706 INFO L226 Difference]: Without dead ends: 122 [2021-10-11 02:22:46,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-11 02:22:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 93. [2021-10-11 02:22:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 02:22:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 02:22:46,724 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 25 [2021-10-11 02:22:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:46,727 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 02:22:46,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 02:22:46,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:22:46,728 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:46,728 INFO L422 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] [2021-10-11 02:22:46,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:22:46,945 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:46,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:46,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-10-11 02:22:46,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:46,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156140494] [2021-10-11 02:22:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:47,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:22:47,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:47,072 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:47,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:47,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:47,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156140494] [2021-10-11 02:22:47,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:47,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:22:47,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707313665] [2021-10-11 02:22:47,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:22:47,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:47,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:22:47,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:47,155 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 7 states. [2021-10-11 02:22:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:47,498 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-10-11 02:22:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:22:47,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-10-11 02:22:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:47,500 INFO L225 Difference]: With dead ends: 131 [2021-10-11 02:22:47,500 INFO L226 Difference]: Without dead ends: 118 [2021-10-11 02:22:47,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:22:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-11 02:22:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-10-11 02:22:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 02:22:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-10-11 02:22:47,508 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-10-11 02:22:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:47,509 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-10-11 02:22:47,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:22:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-10-11 02:22:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:22:47,510 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:47,510 INFO L422 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] [2021-10-11 02:22:47,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:22:47,728 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:47,729 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-10-11 02:22:47,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:47,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196750656] [2021-10-11 02:22:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:47,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:22:47,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:47,894 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:47,895 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:47,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:47,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196750656] [2021-10-11 02:22:47,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:47,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:22:47,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739943978] [2021-10-11 02:22:47,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:22:47,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:47,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:22:47,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:22:47,991 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 8 states. [2021-10-11 02:22:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:48,341 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-10-11 02:22:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:22:48,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-10-11 02:22:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:48,342 INFO L225 Difference]: With dead ends: 114 [2021-10-11 02:22:48,342 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 02:22:48,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:22:48,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 02:22:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-11 02:22:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 02:22:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-11 02:22:48,349 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-10-11 02:22:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:48,349 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-11 02:22:48,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:22:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-11 02:22:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:22:48,350 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:48,350 INFO L422 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] [2021-10-11 02:22:48,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 02:22:48,551 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:48,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:48,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-10-11 02:22:48,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:48,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494316858] [2021-10-11 02:22:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:48,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:22:48,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:48,655 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:48,655 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:48,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:48,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494316858] [2021-10-11 02:22:48,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:48,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:22:48,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111374250] [2021-10-11 02:22:48,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:22:48,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:48,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:22:48,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:48,736 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 7 states. [2021-10-11 02:22:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:49,005 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-10-11 02:22:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:22:49,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-10-11 02:22:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:49,007 INFO L225 Difference]: With dead ends: 84 [2021-10-11 02:22:49,007 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 02:22:49,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:22:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 02:22:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 02:22:49,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:22:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-11 02:22:49,012 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-10-11 02:22:49,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:49,013 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-11 02:22:49,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:22:49,013 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-11 02:22:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:22:49,013 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:49,016 INFO L422 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] [2021-10-11 02:22:49,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2021-10-11 02:22:49,216 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:49,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-10-11 02:22:49,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:49,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43118371] [2021-10-11 02:22:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:49,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:22:49,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:49,329 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:49,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:49,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:49,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43118371] [2021-10-11 02:22:49,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:49,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:22:49,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225919460] [2021-10-11 02:22:49,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:22:49,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:49,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:22:49,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:49,401 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 6 states. [2021-10-11 02:22:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:49,628 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-10-11 02:22:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:22:49,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-10-11 02:22:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:49,630 INFO L225 Difference]: With dead ends: 82 [2021-10-11 02:22:49,630 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 02:22:49,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:22:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 02:22:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 02:22:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:22:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-11 02:22:49,642 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-10-11 02:22:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:49,642 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-11 02:22:49,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:22:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-11 02:22:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:22:49,643 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:49,643 INFO L422 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] [2021-10-11 02:22:49,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2021-10-11 02:22:49,859 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:49,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:49,859 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-10-11 02:22:49,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:49,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313493190] [2021-10-11 02:22:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:49,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:22:49,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:50,080 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2021-10-11 02:22:50,098 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-10-11 02:22:50,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:50,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:50,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313493190] [2021-10-11 02:22:50,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:50,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:22:50,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021392847] [2021-10-11 02:22:50,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:22:50,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:50,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:22:50,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:22:50,225 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 9 states. [2021-10-11 02:22:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:51,664 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2021-10-11 02:22:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:22:51,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2021-10-11 02:22:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:51,665 INFO L225 Difference]: With dead ends: 120 [2021-10-11 02:22:51,665 INFO L226 Difference]: Without dead ends: 109 [2021-10-11 02:22:51,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:22:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-11 02:22:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 74. [2021-10-11 02:22:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:22:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-10-11 02:22:51,672 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 26 [2021-10-11 02:22:51,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:51,672 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-10-11 02:22:51,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:22:51,673 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-10-11 02:22:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:22:51,676 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:51,676 INFO L422 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] [2021-10-11 02:22:51,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2021-10-11 02:22:51,882 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:51,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1994202826, now seen corresponding path program 1 times [2021-10-11 02:22:51,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:51,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795723960] [2021-10-11 02:22:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:51,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:51,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:52,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:52,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795723960] [2021-10-11 02:22:52,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:52,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:52,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411229581] [2021-10-11 02:22:52,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:52,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:52,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:52,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:52,006 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 4 states. [2021-10-11 02:22:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:52,109 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2021-10-11 02:22:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:52,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2021-10-11 02:22:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:52,111 INFO L225 Difference]: With dead ends: 120 [2021-10-11 02:22:52,111 INFO L226 Difference]: Without dead ends: 103 [2021-10-11 02:22:52,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-11 02:22:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2021-10-11 02:22:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:22:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-10-11 02:22:52,122 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 26 [2021-10-11 02:22:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:52,123 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-10-11 02:22:52,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-10-11 02:22:52,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:22:52,125 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:52,125 INFO L422 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] [2021-10-11 02:22:52,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2021-10-11 02:22:52,338 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:52,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:52,339 INFO L82 PathProgramCache]: Analyzing trace with hash 548357897, now seen corresponding path program 1 times [2021-10-11 02:22:52,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:52,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151673270] [2021-10-11 02:22:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:52,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:22:52,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:52,505 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:52,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:52,527 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:52,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:52,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151673270] [2021-10-11 02:22:52,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:52,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 02:22:52,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523583640] [2021-10-11 02:22:52,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:22:52,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:52,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:22:52,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:22:52,712 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 10 states. [2021-10-11 02:22:55,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:55,470 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2021-10-11 02:22:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:22:55,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2021-10-11 02:22:55,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:55,471 INFO L225 Difference]: With dead ends: 81 [2021-10-11 02:22:55,471 INFO L226 Difference]: Without dead ends: 70 [2021-10-11 02:22:55,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:22:55,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-11 02:22:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-11 02:22:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:22:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2021-10-11 02:22:55,477 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 27 [2021-10-11 02:22:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:55,478 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-10-11 02:22:55,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:22:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2021-10-11 02:22:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:22:55,478 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:55,478 INFO L422 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] [2021-10-11 02:22:55,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2021-10-11 02:22:55,686 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:55,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2066405290, now seen corresponding path program 1 times [2021-10-11 02:22:55,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:55,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917512158] [2021-10-11 02:22:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:55,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:55,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:55,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:55,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917512158] [2021-10-11 02:22:55,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:55,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:55,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647228876] [2021-10-11 02:22:55,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:55,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:55,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:55,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:55,820 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 4 states. [2021-10-11 02:22:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:55,884 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-10-11 02:22:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:55,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-10-11 02:22:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:55,886 INFO L225 Difference]: With dead ends: 107 [2021-10-11 02:22:55,887 INFO L226 Difference]: Without dead ends: 88 [2021-10-11 02:22:55,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:55,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-11 02:22:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2021-10-11 02:22:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:22:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2021-10-11 02:22:55,897 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 27 [2021-10-11 02:22:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:55,897 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2021-10-11 02:22:55,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2021-10-11 02:22:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:22:55,898 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:55,898 INFO L422 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] [2021-10-11 02:22:56,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2021-10-11 02:22:56,110 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:56,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:56,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-10-11 02:22:56,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:56,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640581662] [2021-10-11 02:22:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:56,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-11 02:22:56,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:56,230 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:56,230 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:56,251 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:56,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:56,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640581662] [2021-10-11 02:22:56,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:56,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-11 02:22:56,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273559911] [2021-10-11 02:22:56,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:22:56,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:56,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:22:56,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:22:56,575 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 12 states. [2021-10-11 02:22:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:58,458 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2021-10-11 02:22:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-11 02:22:58,459 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2021-10-11 02:22:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:58,460 INFO L225 Difference]: With dead ends: 193 [2021-10-11 02:22:58,460 INFO L226 Difference]: Without dead ends: 158 [2021-10-11 02:22:58,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-10-11 02:22:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-11 02:22:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-10-11 02:22:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:22:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-11 02:22:58,469 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-10-11 02:22:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:58,469 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-11 02:22:58,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:22:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-11 02:22:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 02:22:58,471 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:58,471 INFO L422 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] [2021-10-11 02:22:58,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2021-10-11 02:22:58,685 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:58,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:58,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-10-11 02:22:58,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:58,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802088206] [2021-10-11 02:22:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:58,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:22:58,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:58,785 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:22:58,786 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:59,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:59,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802088206] [2021-10-11 02:22:59,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:59,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 02:22:59,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550959814] [2021-10-11 02:22:59,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:22:59,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:59,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:22:59,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:22:59,033 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2021-10-11 02:22:59,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:59,924 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2021-10-11 02:22:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-11 02:22:59,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2021-10-11 02:22:59,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:59,926 INFO L225 Difference]: With dead ends: 135 [2021-10-11 02:22:59,926 INFO L226 Difference]: Without dead ends: 111 [2021-10-11 02:22:59,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:22:59,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-11 02:22:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 43. [2021-10-11 02:22:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:22:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-10-11 02:22:59,933 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 28 [2021-10-11 02:22:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:59,933 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-10-11 02:22:59,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:22:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-10-11 02:22:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 02:22:59,933 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:59,933 INFO L422 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] [2021-10-11 02:23:00,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2021-10-11 02:23:00,134 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:00,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1106626442, now seen corresponding path program 1 times [2021-10-11 02:23:00,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:00,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755119290] [2021-10-11 02:23:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:00,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:00,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:00,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:00,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755119290] [2021-10-11 02:23:00,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:00,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:00,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810500595] [2021-10-11 02:23:00,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:00,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:00,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:00,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:00,263 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2021-10-11 02:23:00,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:00,299 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-10-11 02:23:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:00,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-10-11 02:23:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:00,300 INFO L225 Difference]: With dead ends: 67 [2021-10-11 02:23:00,301 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:23:00,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:23:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2021-10-11 02:23:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 02:23:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-11 02:23:00,306 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-10-11 02:23:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:00,307 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-11 02:23:00,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-11 02:23:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:23:00,307 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:00,308 INFO L422 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] [2021-10-11 02:23:00,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2021-10-11 02:23:00,520 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:00,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:00,521 INFO L82 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-10-11 02:23:00,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:00,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041915228] [2021-10-11 02:23:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:00,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:23:00,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:00,620 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:23:00,620 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:00,641 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:00,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:00,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041915228] [2021-10-11 02:23:00,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:00,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:23:00,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798061829] [2021-10-11 02:23:00,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:23:00,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:00,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:23:00,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:23:00,698 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2021-10-11 02:23:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:00,871 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-11 02:23:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:00,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2021-10-11 02:23:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:00,873 INFO L225 Difference]: With dead ends: 52 [2021-10-11 02:23:00,873 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 02:23:00,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:23:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 02:23:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-11 02:23:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 02:23:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-10-11 02:23:00,878 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-10-11 02:23:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:00,878 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-10-11 02:23:00,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:23:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-10-11 02:23:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:23:00,879 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:00,879 INFO L422 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] [2021-10-11 02:23:01,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2021-10-11 02:23:01,080 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:01,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-10-11 02:23:01,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:01,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744009674] [2021-10-11 02:23:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:01,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:23:01,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:01,205 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:23:01,206 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:01,223 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:01,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:01,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744009674] [2021-10-11 02:23:01,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:01,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:23:01,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618064462] [2021-10-11 02:23:01,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:23:01,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:01,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:23:01,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:23:01,299 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2021-10-11 02:23:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:01,607 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-10-11 02:23:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:23:01,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-10-11 02:23:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:01,608 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:23:01,608 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:23:01,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:23:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:23:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-11 02:23:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:23:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-11 02:23:01,613 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-10-11 02:23:01,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:01,613 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-11 02:23:01,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:23:01,613 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-11 02:23:01,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 02:23:01,613 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:01,614 INFO L422 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] [2021-10-11 02:23:01,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2021-10-11 02:23:01,814 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:01,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:01,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-10-11 02:23:01,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:01,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072236120] [2021-10-11 02:23:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:01,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:23:01,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:01,944 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-10-11 02:23:01,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:02,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:02,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072236120] [2021-10-11 02:23:02,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:02,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:23:02,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936802248] [2021-10-11 02:23:02,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:23:02,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:02,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:23:02,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:02,059 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2021-10-11 02:23:02,225 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-10-11 02:23:02,524 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-10-11 02:23:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:02,605 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2021-10-11 02:23:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:23:02,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2021-10-11 02:23:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:02,607 INFO L225 Difference]: With dead ends: 71 [2021-10-11 02:23:02,607 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 02:23:02,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:23:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 02:23:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2021-10-11 02:23:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-10-11 02:23:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-10-11 02:23:02,613 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 33 [2021-10-11 02:23:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:02,613 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-10-11 02:23:02,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:23:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-10-11 02:23:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 02:23:02,614 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:02,614 INFO L422 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] [2021-10-11 02:23:02,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2021-10-11 02:23:02,827 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:02,827 INFO L82 PathProgramCache]: Analyzing trace with hash -26785796, now seen corresponding path program 1 times [2021-10-11 02:23:02,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:02,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985410026] [2021-10-11 02:23:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:02,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:23:02,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:02,921 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:23:02,921 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:03,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:03,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985410026] [2021-10-11 02:23:03,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:03,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:23:03,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711752248] [2021-10-11 02:23:03,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:23:03,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:03,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:23:03,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:23:03,049 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2021-10-11 02:23:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:03,407 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-10-11 02:23:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:23:03,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2021-10-11 02:23:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:03,408 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:23:03,408 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:23:03,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:23:03,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:23:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2021-10-11 02:23:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:23:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-11 02:23:03,414 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2021-10-11 02:23:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:03,414 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-11 02:23:03,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:23:03,414 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-11 02:23:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-11 02:23:03,414 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:03,414 INFO L422 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] [2021-10-11 02:23:03,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2021-10-11 02:23:03,615 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:03,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:03,615 INFO L82 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-10-11 02:23:03,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:03,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087201463] [2021-10-11 02:23:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2021-10-11 02:23:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:03,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:03,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:03,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:03,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087201463] [2021-10-11 02:23:03,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:03,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:03,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865133703] [2021-10-11 02:23:03,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:03,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:03,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:03,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:03,738 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2021-10-11 02:23:03,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:03,772 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-11 02:23:03,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:03,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2021-10-11 02:23:03,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:03,772 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:23:03,772 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:03,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:03,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-11 02:23:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:03,773 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:03,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:03,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:03,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 mathsat -unsat_core_generation=3 [2021-10-11 02:23:03,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:23:04,368 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 109 [2021-10-11 02:23:04,534 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 104 [2021-10-11 02:23:04,671 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 53 [2021-10-11 02:23:04,966 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 75 [2021-10-11 02:23:05,855 WARN L197 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 49 [2021-10-11 02:23:06,578 WARN L197 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 31 [2021-10-11 02:23:06,794 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2021-10-11 02:23:06,999 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2021-10-11 02:23:07,489 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2021-10-11 02:23:07,702 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2021-10-11 02:23:08,250 WARN L197 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-10-11 02:23:08,448 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2021-10-11 02:23:08,584 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-10-11 02:23:08,646 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2021-10-11 02:23:08,646 INFO L262 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2021-10-11 02:23:08,646 INFO L262 CegarLoopResult]: For program point L36(lines 36 42) no Hoare annotation was computed. [2021-10-11 02:23:08,646 INFO L262 CegarLoopResult]: For program point L69-2(line 69) no Hoare annotation was computed. [2021-10-11 02:23:08,646 INFO L262 CegarLoopResult]: For program point L36-1(lines 36 42) no Hoare annotation was computed. [2021-10-11 02:23:08,646 INFO L262 CegarLoopResult]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2021-10-11 02:23:08,647 INFO L262 CegarLoopResult]: For program point L69-5(lines 69 85) no Hoare annotation was computed. [2021-10-11 02:23:08,647 INFO L262 CegarLoopResult]: For program point L69-7(lines 69 85) no Hoare annotation was computed. [2021-10-11 02:23:08,647 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:23:08,647 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:23:08,647 INFO L262 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-11 02:23:08,647 INFO L262 CegarLoopResult]: For program point L53-2(line 53) no Hoare annotation was computed. [2021-10-11 02:23:08,647 INFO L258 CegarLoopResult]: At program point L53-3(lines 45 54) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse2 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse3 (not .cse1)) (.cse4 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|))) (or (and (not (fp.eq .cse0 .cse0)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse2 (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmax_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse2 .cse3 .cse4) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (or (= ULTIMATE.start_fmax_float_~y (fp (_ bv0 1) (_ bv0 8) (_ bv0 23))) (= ULTIMATE.start_fmax_float_~y (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)))) .cse2 (= ULTIMATE.start_fmax_float_~y .cse0) .cse3 .cse4)))) [2021-10-11 02:23:08,648 INFO L262 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2021-10-11 02:23:08,648 INFO L262 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-11 02:23:08,648 INFO L265 CegarLoopResult]: At program point L87(lines 59 88) the Hoare annotation is: true [2021-10-11 02:23:08,648 INFO L262 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2021-10-11 02:23:08,648 INFO L262 CegarLoopResult]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-11 02:23:08,648 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2021-10-11 02:23:08,649 INFO L262 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-11 02:23:08,649 INFO L262 CegarLoopResult]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2021-10-11 02:23:08,649 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:23:08,649 INFO L258 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2021-10-11 02:23:08,649 INFO L258 CegarLoopResult]: At program point L57-1(line 57) the Hoare annotation is: (and (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) |ULTIMATE.start_main_#t~short15| (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-11 02:23:08,650 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2021-10-11 02:23:08,650 INFO L258 CegarLoopResult]: At program point L57-2(line 57) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short19|)) (.cse1 (not |ULTIMATE.start_main_#t~short15|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 .cse1 .cse2))) [2021-10-11 02:23:08,650 INFO L258 CegarLoopResult]: At program point L57-3(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short18| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (not |ULTIMATE.start_main_#t~short19|) (not |ULTIMATE.start_main_#t~short15|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-10-11 02:23:08,650 INFO L258 CegarLoopResult]: At program point L57-4(line 57) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not .cse1) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)) (and (not (let ((.cse2 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse2 .cse2))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmax_float_#res|)))) [2021-10-11 02:23:08,650 INFO L258 CegarLoopResult]: At program point L57-5(line 57) the Hoare annotation is: (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) |ULTIMATE.start_main_#t~short23| (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)) [2021-10-11 02:23:08,650 INFO L258 CegarLoopResult]: At program point L57-6(line 57) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)) (and (not (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse1 .cse1))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmax_float_#res|)))) [2021-10-11 02:23:08,651 INFO L258 CegarLoopResult]: At program point L57-7(line 57) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmax_float_#res|)) [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L33(lines 33 42) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L33-1(lines 33 42) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L258 CegarLoopResult]: At program point L25-2(lines 25 29) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not .cse1)) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse0))) [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L25-5(lines 25 29) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L258 CegarLoopResult]: At program point L25-6(lines 25 29) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 (not .cse2)) (and .cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse2 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1))) [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L25-7(lines 22 43) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L50(lines 50 52) no Hoare annotation was computed. [2021-10-11 02:23:08,651 INFO L262 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2021-10-11 02:23:08,652 INFO L258 CegarLoopResult]: At program point L42(lines 22 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (and (= ULTIMATE.start_fmax_float_~x .cse1) (let ((.cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse3 (fp.eq .cse1 .cse1))) (or (and (not (= (bvadd ULTIMATE.start___fpclassify_float_~w~0 (_ bv2147483648 32)) (_ bv0 32))) (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv2139095039 32))) (or (not (bvuge ULTIMATE.start___fpclassify_float_~w~0 (_ bv2147483649 32))) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv2155872255 32)))) .cse2 .cse0 (or (not (bvuge ULTIMATE.start___fpclassify_float_~w~0 (_ bv2155872256 32))) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv4286578687 32)))) .cse3) (and .cse2 (or (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0 .cse3))) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x))))) [2021-10-11 02:23:08,652 INFO L258 CegarLoopResult]: At program point L42-1(lines 22 43) the Hoare annotation is: (let ((.cse8 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse4 (or (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) (.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) (.cse5 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse6 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_fmax_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (.cse3 (not .cse8))) (or (and (or (and .cse0 (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse3 .cse4)) .cse5 .cse6 .cse7) (and .cse0 .cse1 (or (= ULTIMATE.start_fmax_float_~y (fp (_ bv0 1) (_ bv0 8) (_ bv0 23))) (= ULTIMATE.start_fmax_float_~y (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)))) .cse7 .cse2 .cse3 .cse4) (and .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse8 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|) .cse7 .cse2) (and .cse0 (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) .cse5 .cse1 .cse6 .cse7 .cse2 .cse3)))) [2021-10-11 02:23:08,652 INFO L262 CegarLoopResult]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2021-10-11 02:23:08,652 INFO L262 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-11 02:23:08,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:08 BoogieIcfgContainer [2021-10-11 02:23:08,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:08,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:08,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:08,725 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:08,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:40" (3/4) ... [2021-10-11 02:23:08,731 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:08,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-11 02:23:08,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:23:08,745 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:23:08,745 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:08,774 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2021-10-11 02:23:08,774 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x) [2021-10-11 02:23:08,774 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((0bv32 == \result && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) [2021-10-11 02:23:08,775 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-!isnan_float(x) && isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) [2021-10-11 02:23:08,775 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) [2021-10-11 02:23:08,775 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == y) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || ((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && ((((((((!(~bvadd64(w, 2147483648bv32) == 0bv32) && 1bv32 == \result) && !~bvule32(w, 2139095039bv32)) && (!~bvuge32(w, 2147483649bv32) || !~bvule32(w, 2155872255bv32))) && 1bv32 == \result) && y == y) && (!~bvuge32(w, 2155872256bv32) || !~bvule32(w, 4286578687bv32))) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || (((1bv32 == \result && ((3bv32 == \result || 4bv32 == \result) || 2bv32 == \result)) && y == y) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))))) && !~fp.eq~FLOAT(y, y)) && x == x) && x == x) [2021-10-11 02:23:08,776 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && y == y) && x == \result) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result)) || ((((((!~fp.eq~FLOAT(x, x) && y == x) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == \result) [2021-10-11 02:23:08,776 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && y == y) [2021-10-11 02:23:08,776 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) || ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && x == res) && 0bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && y == y) && x == \result) [2021-10-11 02:23:08,777 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!~fp.eq~FLOAT(x, x) && 3bv32 == \result) && y == x) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((!~fp.eq~FLOAT(x, x) && y == x) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result))) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) || ((((((!~fp.eq~FLOAT(x, x) && y == x) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result))) || (((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || (((((((!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) [2021-10-11 02:23:08,777 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result [2021-10-11 02:23:08,778 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && x == res) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) && y == y) && x == \result) [2021-10-11 02:23:08,778 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && x == res) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) && !~fp.eq~FLOAT(y, y)) && x == \result [2021-10-11 02:23:08,806 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42df68f6-665f-4d5d-a078-e982007d9c0b/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:08,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:08,807 INFO L168 Benchmark]: Toolchain (without parser) took 30041.44 ms. Allocated memory was 67.1 MB in the beginning and 115.3 MB in the end (delta: 48.2 MB). Free memory was 49.7 MB in the beginning and 60.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:08,808 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:08,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.21 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 49.5 MB in the end (delta: 37.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:08,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.79 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 47.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:08,809 INFO L168 Benchmark]: Boogie Preprocessor took 79.74 ms. Allocated memory is still 67.1 MB. Free memory was 47.4 MB in the beginning and 45.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:08,810 INFO L168 Benchmark]: RCFGBuilder took 677.61 ms. Allocated memory was 67.1 MB in the beginning and 92.3 MB in the end (delta: 25.2 MB). Free memory was 45.8 MB in the beginning and 66.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:08,810 INFO L168 Benchmark]: TraceAbstraction took 28681.33 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 66.2 MB in the beginning and 66.0 MB in the end (delta: 214.1 kB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:08,811 INFO L168 Benchmark]: Witness Printer took 82.23 ms. Allocated memory is still 115.3 MB. Free memory was 66.0 MB in the beginning and 60.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:08,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 433.21 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 49.5 MB in the end (delta: 37.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.79 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 47.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.74 ms. Allocated memory is still 67.1 MB. Free memory was 47.4 MB in the beginning and 45.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 677.61 ms. Allocated memory was 67.1 MB in the beginning and 92.3 MB in the end (delta: 25.2 MB). Free memory was 45.8 MB in the beginning and 66.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28681.33 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 66.2 MB in the beginning and 66.0 MB in the end (delta: 214.1 kB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. * Witness Printer took 82.23 ms. Allocated memory is still 115.3 MB. Free memory was 66.0 MB in the beginning and 60.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && y == y) && x == \result) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result)) || ((((((!~fp.eq~FLOAT(x, x) && y == x) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && x == res) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) && !~fp.eq~FLOAT(y, y)) && x == \result - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && x == res) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) && y == y) && x == \result) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && y == y) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((((((!~fp.eq~FLOAT(x, x) && 3bv32 == \result) && y == x) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((!~fp.eq~FLOAT(x, x) && y == x) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result))) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) || ((((((!~fp.eq~FLOAT(x, x) && y == x) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result))) || (((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || (((((((!~fp.eq~FLOAT(x, x) && 1bv32 == \result) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == y) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || ((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && ((((((((!(~bvadd64(w, 2147483648bv32) == 0bv32) && 1bv32 == \result) && !~bvule32(w, 2139095039bv32)) && (!~bvuge32(w, 2147483649bv32) || !~bvule32(w, 2155872255bv32))) && 1bv32 == \result) && y == y) && (!~bvuge32(w, 2155872256bv32) || !~bvule32(w, 4286578687bv32))) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || (((1bv32 == \result && ((3bv32 == \result || 4bv32 == \result) || 2bv32 == \result)) && y == y) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))))) && !~fp.eq~FLOAT(y, y)) && x == x) && x == x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) || ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && x == res) && 0bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && y == y) && x == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((aux-!isnan_float(x) && isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((0bv32 == \result && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.8s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1674 SDtfs, 1873 SDslu, 4718 SDs, 0 SdLazy, 1814 SolverSat, 198 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 785 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 644 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 49 NumberOfFragments, 750 HoareAnnotationTreeSize, 14 FomulaSimplifications, 7499146 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 67384 FormulaSimplificationTreeSizeReductionInter, 3.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 67620 SizeOfPredicates, 166 NumberOfNonLiveVariables, 2360 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...