./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P --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 58b944d221faff3c6824998b05c9a224fa74d600c63469e9d7cd97b7a5527588 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:33:53,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:33:53,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:33:53,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:33:53,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:33:53,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:33:53,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:33:53,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:33:53,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:33:53,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:33:53,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:33:53,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:33:53,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:33:53,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:33:53,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:33:53,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:33:53,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:33:53,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:33:53,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:33:53,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:33:53,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:33:53,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:33:53,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:33:53,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:33:53,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:33:53,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:33:53,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:33:53,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:33:53,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:33:53,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:33:53,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:33:53,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:33:53,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:33:53,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:33:53,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:33:53,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:33:53,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:33:53,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:33:53,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:33:53,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:33:53,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:33:53,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:33:53,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:33:53,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:33:53,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:33:53,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:33:53,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:33:53,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:33:53,625 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:33:53,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:33:53,626 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:33:53,626 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:33:53,627 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:33:53,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:33:53,628 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:33:53,628 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:33:53,628 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:33:53,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:33:53,629 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:33:53,629 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:33:53,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:33:53,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:33:53,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:33:53,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:33:53,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:33:53,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:33:53,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:33:53,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:33:53,634 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:33:53,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:33:53,635 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:33:53,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:33:53,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:33:53,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:33:53,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:53,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:33:53,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:33:53,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:33:53,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:33:53,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:33:53,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:33:53,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:33:53,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:33:53,645 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_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58b944d221faff3c6824998b05c9a224fa74d600c63469e9d7cd97b7a5527588 [2021-11-21 01:33:53,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:33:53,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:33:53,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:33:53,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:33:53,966 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:33:53,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c [2021-11-21 01:33:54,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data/0661ecca6/dba085aa5bf04047ad3ae3eee2dea163/FLAG8c7419ea5 [2021-11-21 01:33:54,614 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:33:54,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c [2021-11-21 01:33:54,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data/0661ecca6/dba085aa5bf04047ad3ae3eee2dea163/FLAG8c7419ea5 [2021-11-21 01:33:54,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data/0661ecca6/dba085aa5bf04047ad3ae3eee2dea163 [2021-11-21 01:33:54,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:33:54,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:33:54,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:54,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:33:54,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:33:54,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:54" (1/1) ... [2021-11-21 01:33:54,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a999567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:54, skipping insertion in model container [2021-11-21 01:33:54,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:54" (1/1) ... [2021-11-21 01:33:54,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:33:55,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:33:55,186 WARN L230 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_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c[1995,2008] [2021-11-21 01:33:55,191 WARN L230 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_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c[2364,2377] [2021-11-21 01:33:55,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:55,234 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:33:55,249 WARN L230 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_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c[1995,2008] [2021-11-21 01:33:55,250 WARN L230 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_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c[2364,2377] [2021-11-21 01:33:55,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:55,304 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:33:55,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55 WrapperNode [2021-11-21 01:33:55,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:55,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:55,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:33:55,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:33:55,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,349 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-21 01:33:55,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:55,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:33:55,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:33:55,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:33:55,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:33:55,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:33:55,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:33:55,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:33:55,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (1/1) ... [2021-11-21 01:33:55,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:55,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:33:55,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:33:55,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:33:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:33:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 01:33:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 01:33:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:33:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:33:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:33:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:33:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:33:55,582 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:33:55,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:33:55,990 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:33:56,111 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:33:56,114 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:33:56,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:56 BoogieIcfgContainer [2021-11-21 01:33:56,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:33:56,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:33:56,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:33:56,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:33:56,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:33:54" (1/3) ... [2021-11-21 01:33:56,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13451509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:33:56, skipping insertion in model container [2021-11-21 01:33:56,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:55" (2/3) ... [2021-11-21 01:33:56,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13451509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:33:56, skipping insertion in model container [2021-11-21 01:33:56,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:56" (3/3) ... [2021-11-21 01:33:56,133 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_2a.c.cil.c [2021-11-21 01:33:56,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:33:56,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:33:56,207 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:33:56,223 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:33:56,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:33:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 01:33:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:33:56,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:56,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:33:56,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash 7146571, now seen corresponding path program 1 times [2021-11-21 01:33:56,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:56,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539013003] [2021-11-21 01:33:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:56,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:33:56,375 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:33:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:33:56,422 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:33:56,424 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:33:56,426 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:33:56,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:33:56,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:33:56,434 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:33:56,438 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:33:56,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:33:56 BoogieIcfgContainer [2021-11-21 01:33:56,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:33:56,467 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:33:56,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:33:56,468 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:33:56,468 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:56" (3/4) ... [2021-11-21 01:33:56,472 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:33:56,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:33:56,474 INFO L158 Benchmark]: Toolchain (without parser) took 1514.64ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 80.2MB in the beginning and 98.8MB in the end (delta: -18.7MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-11-21 01:33:56,475 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:33:56,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.71ms. Allocated memory is still 109.1MB. Free memory was 80.0MB in the beginning and 66.6MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-21 01:33:56,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.56ms. Allocated memory is still 109.1MB. Free memory was 66.6MB in the beginning and 64.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:33:56,482 INFO L158 Benchmark]: Boogie Preprocessor took 29.01ms. Allocated memory is still 109.1MB. Free memory was 64.7MB in the beginning and 63.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:33:56,485 INFO L158 Benchmark]: RCFGBuilder took 740.04ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 63.2MB in the beginning and 112.3MB in the end (delta: -49.1MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2021-11-21 01:33:56,485 INFO L158 Benchmark]: TraceAbstraction took 341.90ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 98.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:33:56,486 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 142.6MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:33:56,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.71ms. Allocated memory is still 109.1MB. Free memory was 80.0MB in the beginning and 66.6MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.56ms. Allocated memory is still 109.1MB. Free memory was 66.6MB in the beginning and 64.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.01ms. Allocated memory is still 109.1MB. Free memory was 64.7MB in the beginning and 63.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 740.04ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 63.2MB in the beginning and 112.3MB in the end (delta: -49.1MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * TraceAbstraction took 341.90ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 98.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 142.6MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-21 01:33:56,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P --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 58b944d221faff3c6824998b05c9a224fa74d600c63469e9d7cd97b7a5527588 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:33:58,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:33:58,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:33:58,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:33:58,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:33:58,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:33:59,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:33:59,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:33:59,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:33:59,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:33:59,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:33:59,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:33:59,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:33:59,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:33:59,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:33:59,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:33:59,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:33:59,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:33:59,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:33:59,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:33:59,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:33:59,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:33:59,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:33:59,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:33:59,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:33:59,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:33:59,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:33:59,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:33:59,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:33:59,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:33:59,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:33:59,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:33:59,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:33:59,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:33:59,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:33:59,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:33:59,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:33:59,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:33:59,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:33:59,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:33:59,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:33:59,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:33:59,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:33:59,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:33:59,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:33:59,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:33:59,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:33:59,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:33:59,108 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:33:59,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:33:59,108 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:33:59,108 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:33:59,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:33:59,110 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:33:59,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:33:59,112 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:33:59,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:33:59,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:33:59,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:33:59,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:33:59,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:33:59,113 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:33:59,113 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:33:59,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:33:59,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:33:59,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:33:59,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:33:59,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:33:59,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:33:59,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:33:59,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:59,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:33:59,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:33:59,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:33:59,117 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:33:59,117 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:33:59,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:33:59,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:33:59,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:33:59,118 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_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58b944d221faff3c6824998b05c9a224fa74d600c63469e9d7cd97b7a5527588 [2021-11-21 01:33:59,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:33:59,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:33:59,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:33:59,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:33:59,528 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:33:59,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c [2021-11-21 01:33:59,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data/c921485c9/bb9a92e6787642b1b71b7441a415794a/FLAG074286784 [2021-11-21 01:34:00,250 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:34:00,256 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c [2021-11-21 01:34:00,268 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data/c921485c9/bb9a92e6787642b1b71b7441a415794a/FLAG074286784 [2021-11-21 01:34:00,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/data/c921485c9/bb9a92e6787642b1b71b7441a415794a [2021-11-21 01:34:00,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:34:00,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:34:00,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:34:00,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:34:00,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:34:00,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a82f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00, skipping insertion in model container [2021-11-21 01:34:00,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:34:00,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:34:00,528 WARN L230 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_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c[1995,2008] [2021-11-21 01:34:00,532 WARN L230 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_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c[2364,2377] [2021-11-21 01:34:00,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:34:00,637 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:34:00,655 WARN L230 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_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c[1995,2008] [2021-11-21 01:34:00,657 WARN L230 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_5b505b84-941a-4fe9-a16a-9eaf74777996/sv-benchmarks/c/combinations/square_8+soft_float_2a.c.cil.c[2364,2377] [2021-11-21 01:34:00,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:34:00,699 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:34:00,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00 WrapperNode [2021-11-21 01:34:00,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:34:00,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:34:00,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:34:00,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:34:00,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,744 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-21 01:34:00,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:34:00,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:34:00,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:34:00,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:34:00,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:34:00,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:34:00,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:34:00,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:34:00,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (1/1) ... [2021-11-21 01:34:00,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:34:00,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:34:00,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:34:00,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:34:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:34:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:34:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 01:34:00,900 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 01:34:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:34:00,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:34:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:34:00,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:34:01,014 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:34:01,016 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:34:03,542 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:34:03,554 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:34:03,555 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:34:03,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:34:03 BoogieIcfgContainer [2021-11-21 01:34:03,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:34:03,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:34:03,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:34:03,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:34:03,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:34:00" (1/3) ... [2021-11-21 01:34:03,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5643a4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:34:03, skipping insertion in model container [2021-11-21 01:34:03,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:00" (2/3) ... [2021-11-21 01:34:03,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5643a4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:34:03, skipping insertion in model container [2021-11-21 01:34:03,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:34:03" (3/3) ... [2021-11-21 01:34:03,567 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_2a.c.cil.c [2021-11-21 01:34:03,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:34:03,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:34:03,636 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:34:03,643 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:34:03,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:34:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 01:34:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:34:03,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:03,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:03,668 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:03,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-21 01:34:03,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:34:03,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96085677] [2021-11-21 01:34:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:03,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:34:03,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:34:03,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:34:03,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:34:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:04,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:34:04,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:34:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:34:04,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:34:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:34:04,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:34:04,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96085677] [2021-11-21 01:34:04,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96085677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:04,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:04,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:34:04,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110920569] [2021-11-21 01:34:04,487 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:04,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:34:04,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:34:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:34:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:34:04,521 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:34:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:04,550 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-11-21 01:34:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:34:04,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:34:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:04,560 INFO L225 Difference]: With dead ends: 117 [2021-11-21 01:34:04,561 INFO L226 Difference]: Without dead ends: 52 [2021-11-21 01:34:04,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:34:04,568 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:04,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:34:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-21 01:34:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-21 01:34:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 01:34:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-21 01:34:04,610 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-11-21 01:34:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:04,611 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-21 01:34:04,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:34:04,611 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-21 01:34:04,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:34:04,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:04,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:04,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:34:04,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:34:04,817 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:04,818 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-21 01:34:04,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:34:04,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100951144] [2021-11-21 01:34:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:04,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:34:04,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:34:04,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:34:04,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:34:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:18,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:34:18,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:34:34,003 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:35:23,793 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from false [2021-11-21 01:35:25,843 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from true [2021-11-21 01:35:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:25,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:36,539 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) is different from false [2021-11-21 01:35:38,611 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) is different from true [2021-11-21 01:35:53,460 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))) is different from false [2021-11-21 01:35:55,538 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))) is different from true [2021-11-21 01:36:40,097 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24))))))) is different from false [2021-11-21 01:36:42,172 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24))))))) is different from true [2021-11-21 01:37:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:24,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:24,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100951144] [2021-11-21 01:37:24,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100951144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:24,673 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:24,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-21 01:37:24,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819196494] [2021-11-21 01:37:24,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:24,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:37:24,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:37:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-11-21 01:37:24,678 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:26,762 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:37:28,835 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse1 (_ +zero 8 24))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-21 01:37:30,913 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))) (.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse3))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse2 (or (not .cse0) (not .cse1))))) (or .cse2 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse4 (_ +zero 8 24)) (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))))) is different from false [2021-11-21 01:37:32,995 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse0 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))) (.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse3))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse2 (or (not .cse0) (not .cse1))))) (or .cse2 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse4 (_ +zero 8 24)) (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)))))))) is different from true [2021-11-21 01:37:35,071 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse1) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-11-21 01:37:37,152 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse1) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-21 01:37:39,234 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq |c_ULTIMATE.start_main1_~result~0#1| (_ +zero 8 24)) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (fp.lt |c_ULTIMATE.start_main1_~result~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:37:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:39,267 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2021-11-21 01:37:39,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:37:39,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:37:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:39,269 INFO L225 Difference]: With dead ends: 52 [2021-11-21 01:37:39,270 INFO L226 Difference]: Without dead ends: 47 [2021-11-21 01:37:39,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-11-21 01:37:39,273 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:39,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 316 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 261 Unchecked, 0.0s Time] [2021-11-21 01:37:39,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-21 01:37:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-21 01:37:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 01:37:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2021-11-21 01:37:39,285 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 7 [2021-11-21 01:37:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:39,286 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2021-11-21 01:37:39,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2021-11-21 01:37:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-21 01:37:39,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:39,289 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:39,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:37:39,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:39,496 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1370969986, now seen corresponding path program 1 times [2021-11-21 01:37:39,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:39,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440542681] [2021-11-21 01:37:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:39,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:39,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:39,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:39,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:37:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:39,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:37:39,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:39,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:40,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:40,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440542681] [2021-11-21 01:37:40,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440542681] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:40,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:37:40,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-21 01:37:40,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78612061] [2021-11-21 01:37:40,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:40,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:40,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:37:40,321 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:37:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:40,631 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2021-11-21 01:37:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:37:40,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-11-21 01:37:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:40,636 INFO L225 Difference]: With dead ends: 104 [2021-11-21 01:37:40,636 INFO L226 Difference]: Without dead ends: 61 [2021-11-21 01:37:40,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:37:40,639 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:40,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:37:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-21 01:37:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2021-11-21 01:37:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-21 01:37:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2021-11-21 01:37:40,655 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 43 [2021-11-21 01:37:40,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:40,655 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2021-11-21 01:37:40,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:37:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2021-11-21 01:37:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-21 01:37:40,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:40,659 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:40,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:40,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:40,874 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:40,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash -14997806, now seen corresponding path program 1 times [2021-11-21 01:37:40,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:40,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483287199] [2021-11-21 01:37:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:40,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:40,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:40,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:40,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:37:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:40,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:37:40,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:41,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:41,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483287199] [2021-11-21 01:37:41,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483287199] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:41,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:37:41,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-21 01:37:41,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630643653] [2021-11-21 01:37:41,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:41,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:41,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:37:41,752 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:37:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:42,000 INFO L93 Difference]: Finished difference Result 108 states and 153 transitions. [2021-11-21 01:37:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:37:42,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-11-21 01:37:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:42,003 INFO L225 Difference]: With dead ends: 108 [2021-11-21 01:37:42,003 INFO L226 Difference]: Without dead ends: 64 [2021-11-21 01:37:42,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:37:42,006 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 10 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:42,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:37:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-21 01:37:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-11-21 01:37:42,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 01:37:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2021-11-21 01:37:42,020 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2021-11-21 01:37:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:42,021 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2021-11-21 01:37:42,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:37:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2021-11-21 01:37:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-21 01:37:42,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:42,024 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:42,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:42,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:42,233 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:42,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:42,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1638472845, now seen corresponding path program 1 times [2021-11-21 01:37:42,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:42,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16674045] [2021-11-21 01:37:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:42,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:42,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:42,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:42,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:37:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:42,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:37:42,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:42,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:43,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16674045] [2021-11-21 01:37:43,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16674045] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:43,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:37:43,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-21 01:37:43,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348507300] [2021-11-21 01:37:43,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:43,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:43,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:43,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:43,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:37:43,078 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:37:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:43,404 INFO L93 Difference]: Finished difference Result 117 states and 165 transitions. [2021-11-21 01:37:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:37:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-11-21 01:37:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:43,406 INFO L225 Difference]: With dead ends: 117 [2021-11-21 01:37:43,406 INFO L226 Difference]: Without dead ends: 68 [2021-11-21 01:37:43,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:37:43,409 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:43,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 153 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:37:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-21 01:37:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2021-11-21 01:37:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 01:37:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2021-11-21 01:37:43,430 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 47 [2021-11-21 01:37:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:43,431 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2021-11-21 01:37:43,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:37:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2021-11-21 01:37:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-21 01:37:43,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:43,434 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:43,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-21 01:37:43,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:43,635 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash 388661875, now seen corresponding path program 1 times [2021-11-21 01:37:43,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:43,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101414742] [2021-11-21 01:37:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:43,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:43,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:43,638 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:43,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:37:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:43,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:43,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:44,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:44,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:44,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101414742] [2021-11-21 01:37:44,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101414742] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:44,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:37:44,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-21 01:37:44,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505838243] [2021-11-21 01:37:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:44,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:44,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:44,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:37:44,650 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:37:45,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:45,161 INFO L93 Difference]: Finished difference Result 125 states and 176 transitions. [2021-11-21 01:37:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:37:45,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-11-21 01:37:45,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:45,164 INFO L225 Difference]: With dead ends: 125 [2021-11-21 01:37:45,164 INFO L226 Difference]: Without dead ends: 75 [2021-11-21 01:37:45,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:37:45,167 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:45,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 202 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:37:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-21 01:37:45,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-11-21 01:37:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.38) internal successors, (69), 51 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 01:37:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2021-11-21 01:37:45,180 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 48 [2021-11-21 01:37:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:45,181 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2021-11-21 01:37:45,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:37:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2021-11-21 01:37:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-21 01:37:45,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:45,184 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:45,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:45,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:45,400 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 933318672, now seen corresponding path program 1 times [2021-11-21 01:37:45,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:45,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374159008] [2021-11-21 01:37:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:45,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:45,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:45,406 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:45,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:37:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:45,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:45,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:45,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:46,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:46,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374159008] [2021-11-21 01:37:46,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374159008] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:46,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [366355345] [2021-11-21 01:37:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:46,588 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:46,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:37:46,595 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:37:46,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-21 01:37:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:46,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:37:46,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-21 01:37:46,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-21 01:37:47,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [366355345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:47,133 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:37:47,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-21 01:37:47,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546882737] [2021-11-21 01:37:47,134 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:47,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:47,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:47,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:37:47,136 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:37:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:47,158 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2021-11-21 01:37:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:37:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2021-11-21 01:37:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:47,160 INFO L225 Difference]: With dead ends: 79 [2021-11-21 01:37:47,160 INFO L226 Difference]: Without dead ends: 59 [2021-11-21 01:37:47,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:37:47,162 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 26 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:47,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:37:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-21 01:37:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-21 01:37:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.36) internal successors, (68), 51 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 01:37:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2021-11-21 01:37:47,173 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 49 [2021-11-21 01:37:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:47,174 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2021-11-21 01:37:47,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:37:47,175 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2021-11-21 01:37:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 01:37:47,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:47,178 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:47,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:47,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:47,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:47,581 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1543994934, now seen corresponding path program 1 times [2021-11-21 01:37:47,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:47,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447836208] [2021-11-21 01:37:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:47,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:47,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:47,583 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:47,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:37:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:47,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:47,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:48,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:48,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:48,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447836208] [2021-11-21 01:37:48,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447836208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:48,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1838446734] [2021-11-21 01:37:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:48,706 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:48,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:37:48,713 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:37:48,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-21 01:37:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:48,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:37:48,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-21 01:37:49,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-21 01:37:49,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1838446734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:49,416 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:37:49,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-21 01:37:49,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030657521] [2021-11-21 01:37:49,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:49,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:37:49,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:37:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:37:49,419 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:37:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:49,535 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2021-11-21 01:37:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:37:49,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-11-21 01:37:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:49,538 INFO L225 Difference]: With dead ends: 80 [2021-11-21 01:37:49,538 INFO L226 Difference]: Without dead ends: 59 [2021-11-21 01:37:49,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:37:49,540 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 64 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:49,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:37:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-21 01:37:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-21 01:37:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.34) internal successors, (67), 51 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 01:37:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2021-11-21 01:37:49,559 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 51 [2021-11-21 01:37:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:49,560 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2021-11-21 01:37:49,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:37:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2021-11-21 01:37:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 01:37:49,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:49,563 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:49,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:49,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:49,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:49,978 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:49,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2130800948, now seen corresponding path program 1 times [2021-11-21 01:37:49,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:49,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451462908] [2021-11-21 01:37:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:49,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:49,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:49,981 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:49,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:37:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:50,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:50,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:50,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:51,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:51,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451462908] [2021-11-21 01:37:51,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451462908] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:51,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1464950762] [2021-11-21 01:37:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:51,072 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:51,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:37:51,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:37:51,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-21 01:37:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:51,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:37:51,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 01:37:51,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 01:37:52,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1464950762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:52,094 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:37:52,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 13 [2021-11-21 01:37:52,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245483478] [2021-11-21 01:37:52,094 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:52,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:37:52,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:52,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:37:52,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:37:52,095 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:37:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:52,432 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2021-11-21 01:37:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:37:52,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-11-21 01:37:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:52,435 INFO L225 Difference]: With dead ends: 104 [2021-11-21 01:37:52,435 INFO L226 Difference]: Without dead ends: 86 [2021-11-21 01:37:52,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:37:52,436 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 31 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:52,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 347 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:37:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-21 01:37:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2021-11-21 01:37:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.278688524590164) internal successors, (78), 63 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-21 01:37:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 96 transitions. [2021-11-21 01:37:52,468 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 96 transitions. Word has length 51 [2021-11-21 01:37:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:52,469 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 96 transitions. [2021-11-21 01:37:52,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:37:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 96 transitions. [2021-11-21 01:37:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 01:37:52,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:52,472 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:52,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:52,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:52,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:52,882 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1771139338, now seen corresponding path program 1 times [2021-11-21 01:37:52,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:52,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369653292] [2021-11-21 01:37:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:52,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:52,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:52,884 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:52,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:37:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:52,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:52,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:53,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:53,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369653292] [2021-11-21 01:37:53,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369653292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [730717132] [2021-11-21 01:37:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:53,915 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:53,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:37:53,916 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:37:53,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-21 01:37:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:53,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:37:53,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 01:37:54,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 01:37:54,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [730717132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:54,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831212969] [2021-11-21 01:37:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:54,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:54,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:54,917 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:54,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-21 01:37:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:54,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:37:54,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 01:37:55,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 01:37:55,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831212969] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:55,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:37:55,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 6, 6] total 12 [2021-11-21 01:37:55,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976094373] [2021-11-21 01:37:55,627 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:55,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:37:55,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:55,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:37:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:37:55,629 INFO L87 Difference]: Start difference. First operand 72 states and 96 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 01:37:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:57,386 INFO L93 Difference]: Finished difference Result 172 states and 235 transitions. [2021-11-21 01:37:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 01:37:57,387 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 51 [2021-11-21 01:37:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:57,389 INFO L225 Difference]: With dead ends: 172 [2021-11-21 01:37:57,389 INFO L226 Difference]: Without dead ends: 108 [2021-11-21 01:37:57,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:37:57,390 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 74 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:57,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 409 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:37:57,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-21 01:37:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 80. [2021-11-21 01:37:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 71 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-21 01:37:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2021-11-21 01:37:57,406 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 51 [2021-11-21 01:37:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:57,407 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2021-11-21 01:37:57,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 01:37:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2021-11-21 01:37:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 01:37:57,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:57,409 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:57,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:57,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:57,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:58,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:58,024 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:58,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash 482568913, now seen corresponding path program 1 times [2021-11-21 01:37:58,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:58,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33210891] [2021-11-21 01:37:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:58,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:58,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:58,026 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:58,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 01:37:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:58,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:37:58,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:37:58,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:37:59,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:59,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33210891] [2021-11-21 01:37:59,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33210891] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:59,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1608962770] [2021-11-21 01:37:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:59,158 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:59,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:37:59,173 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:37:59,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-21 01:37:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:59,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:59,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 01:37:59,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 01:37:59,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1608962770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:59,788 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:37:59,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 13 [2021-11-21 01:37:59,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897019395] [2021-11-21 01:37:59,788 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:59,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:59,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:37:59,790 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:38:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:00,034 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2021-11-21 01:38:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:38:00,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-21 01:38:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:00,036 INFO L225 Difference]: With dead ends: 93 [2021-11-21 01:38:00,037 INFO L226 Difference]: Without dead ends: 87 [2021-11-21 01:38:00,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:38:00,038 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:00,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:38:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-21 01:38:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-21 01:38:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 76 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-21 01:38:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 113 transitions. [2021-11-21 01:38:00,051 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 113 transitions. Word has length 55 [2021-11-21 01:38:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:00,052 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 113 transitions. [2021-11-21 01:38:00,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:38:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 113 transitions. [2021-11-21 01:38:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 01:38:00,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:00,054 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:00,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-21 01:38:00,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:00,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:38:00,473 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:00,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:00,474 INFO L85 PathProgramCache]: Analyzing trace with hash 539827215, now seen corresponding path program 1 times [2021-11-21 01:38:00,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:38:00,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944272140] [2021-11-21 01:38:00,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:00,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:38:00,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:38:00,476 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:38:00,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-21 01:38:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:00,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:38:00,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:38:00,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:38:01,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:38:01,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944272140] [2021-11-21 01:38:01,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944272140] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:01,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [508829213] [2021-11-21 01:38:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:01,589 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:38:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:38:01,591 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:38:01,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-21 01:38:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:01,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:38:01,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:38:01,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:38:02,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [508829213] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:02,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200038184] [2021-11-21 01:38:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:02,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:02,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:02,369 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:02,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-21 01:38:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:02,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:38:02,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 01:38:03,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 01:38:03,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200038184] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:38:03,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-21 01:38:03,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6, 6, 8] total 17 [2021-11-21 01:38:03,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532984459] [2021-11-21 01:38:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:03,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:38:03,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:38:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:38:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:38:03,520 INFO L87 Difference]: Start difference. First operand 85 states and 113 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:38:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:03,769 INFO L93 Difference]: Finished difference Result 91 states and 118 transitions. [2021-11-21 01:38:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:38:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-21 01:38:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:03,771 INFO L225 Difference]: With dead ends: 91 [2021-11-21 01:38:03,771 INFO L226 Difference]: Without dead ends: 73 [2021-11-21 01:38:03,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:38:03,773 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:03,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 299 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:38:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-21 01:38:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-21 01:38:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 65 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-21 01:38:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2021-11-21 01:38:03,784 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 55 [2021-11-21 01:38:03,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:03,785 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2021-11-21 01:38:03,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 01:38:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2021-11-21 01:38:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-21 01:38:03,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:03,787 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:03,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:04,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:04,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:04,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:38:04,394 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:04,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:04,394 INFO L85 PathProgramCache]: Analyzing trace with hash -979005146, now seen corresponding path program 1 times [2021-11-21 01:38:04,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:38:04,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143506152] [2021-11-21 01:38:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:04,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:38:04,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:38:04,396 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:38:04,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-21 01:38:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:04,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:38:04,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:38:04,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:38:05,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:38:05,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143506152] [2021-11-21 01:38:05,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143506152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:05,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [703392558] [2021-11-21 01:38:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:05,492 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:38:05,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:38:05,493 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:38:05,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-21 01:38:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:05,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:38:05,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-21 01:38:06,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-21 01:38:06,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [703392558] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:06,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000604331] [2021-11-21 01:38:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:06,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:06,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:06,570 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:06,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-21 01:38:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:06,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:38:06,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-21 01:38:06,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-21 01:38:07,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000604331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:07,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:38:07,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 16 [2021-11-21 01:38:07,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530385203] [2021-11-21 01:38:07,200 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:38:07,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:38:07,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:38:07,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:38:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:38:07,202 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-21 01:38:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:11,138 INFO L93 Difference]: Finished difference Result 180 states and 238 transitions. [2021-11-21 01:38:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 01:38:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2021-11-21 01:38:11,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:11,141 INFO L225 Difference]: With dead ends: 180 [2021-11-21 01:38:11,141 INFO L226 Difference]: Without dead ends: 93 [2021-11-21 01:38:11,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 01:38:11,143 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 130 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:11,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 439 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 01:38:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-21 01:38:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-11-21 01:38:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.265625) internal successors, (81), 66 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-21 01:38:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-11-21 01:38:11,163 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 60 [2021-11-21 01:38:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:11,164 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-11-21 01:38:11,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-21 01:38:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-11-21 01:38:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-21 01:38:11,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:11,167 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:11,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:11,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:11,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:11,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:38:11,783 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1446076250, now seen corresponding path program 1 times [2021-11-21 01:38:11,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:38:11,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148178505] [2021-11-21 01:38:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:11,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:38:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:38:11,785 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:38:11,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-21 01:38:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:11,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:38:11,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 01:38:12,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:38:13,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:38:13,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148178505] [2021-11-21 01:38:13,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148178505] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:13,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [977251996] [2021-11-21 01:38:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:13,634 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:38:13,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:38:13,635 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:38:13,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-21 01:38:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:13,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:38:13,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 01:38:14,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 01:38:15,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [977251996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:15,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642053642] [2021-11-21 01:38:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:15,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:15,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:15,414 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:15,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-21 01:38:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:15,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:38:15,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 01:38:15,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 01:38:16,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642053642] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:16,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:38:16,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 9, 9, 9] total 21 [2021-11-21 01:38:16,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415753363] [2021-11-21 01:38:16,313 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:38:16,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-21 01:38:16,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:38:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-21 01:38:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:38:16,315 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 01:38:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:20,553 INFO L93 Difference]: Finished difference Result 186 states and 243 transitions. [2021-11-21 01:38:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 01:38:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2021-11-21 01:38:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:20,555 INFO L225 Difference]: With dead ends: 186 [2021-11-21 01:38:20,555 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:38:20,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 402 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 01:38:20,558 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 172 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:20,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 579 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 01:38:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:38:20,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:38:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:38:20,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2021-11-21 01:38:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:20,559 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:38:20,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 01:38:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:38:20,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:38:20,563 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:38:20,564 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:38:20,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-21 01:38:20,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-21 01:38:20,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-21 01:38:21,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:38:21,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:38:22,502 INFO L854 garLoopResultBuilder]: At program point L122(lines 71 124) the Hoare annotation is: (or (and (= base2flt_~e |base2flt_#in~e|) (= base2flt_~__retres4~0 (_ bv0 32)) (= base2flt_~m (bvshl (bvshl |base2flt_#in~m| (_ bv1 32)) (_ bv1 32)))) (not (= |base2flt_#in~m| (_ bv0 32)))) [2021-11-21 01:38:22,502 INFO L858 garLoopResultBuilder]: For program point L81(lines 80 95) no Hoare annotation was computed. [2021-11-21 01:38:22,503 INFO L858 garLoopResultBuilder]: For program point L102(lines 100 115) no Hoare annotation was computed. [2021-11-21 01:38:22,503 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 94) no Hoare annotation was computed. [2021-11-21 01:38:22,503 INFO L854 garLoopResultBuilder]: At program point L90-1(lines 80 95) the Hoare annotation is: (and (not (= |base2flt_#in~m| (_ bv0 32))) (or (bvult base2flt_~m (_ bv16777216 32)) (not (= |base2flt_#in~m| (_ bv1 32))))) [2021-11-21 01:38:22,503 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 118) no Hoare annotation was computed. [2021-11-21 01:38:22,503 INFO L861 garLoopResultBuilder]: At program point base2fltENTRY(lines 67 125) the Hoare annotation is: true [2021-11-21 01:38:22,503 INFO L854 garLoopResultBuilder]: At program point L116(lines 78 118) the Hoare annotation is: (not (= |base2flt_#in~m| (_ bv0 32))) [2021-11-21 01:38:22,504 INFO L858 garLoopResultBuilder]: For program point base2fltFINAL(lines 67 125) no Hoare annotation was computed. [2021-11-21 01:38:22,504 INFO L854 garLoopResultBuilder]: At program point L100-2(lines 100 115) the Hoare annotation is: (let ((.cse0 (not (= |base2flt_#in~e| (_ bv0 32))))) (and (or (not (bvsle base2flt_~e (_ bv4294967168 32))) .cse0) (or (not (bvsle (bvadd (_ bv4294967292 32) base2flt_~e) (_ bv4294967168 32))) .cse0) (not (bvult |base2flt_#in~m| (_ bv16777216 32))))) [2021-11-21 01:38:22,504 INFO L858 garLoopResultBuilder]: For program point base2fltEXIT(lines 67 125) no Hoare annotation was computed. [2021-11-21 01:38:22,504 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 77) no Hoare annotation was computed. [2021-11-21 01:38:22,504 INFO L858 garLoopResultBuilder]: For program point L101(lines 100 115) no Hoare annotation was computed. [2021-11-21 01:38:22,504 INFO L854 garLoopResultBuilder]: At program point L283(line 283) the Hoare annotation is: (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) [2021-11-21 01:38:22,504 INFO L858 garLoopResultBuilder]: For program point L283-1(line 283) no Hoare annotation was computed. [2021-11-21 01:38:22,505 INFO L858 garLoopResultBuilder]: For program point L300(lines 300 309) no Hoare annotation was computed. [2021-11-21 01:38:22,505 INFO L854 garLoopResultBuilder]: At program point L300-2(lines 300 309) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~tmp___0~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~tmp___1~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32))) [2021-11-21 01:38:22,505 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 207) no Hoare annotation was computed. [2021-11-21 01:38:22,505 INFO L858 garLoopResultBuilder]: For program point L201-2(lines 200 261) no Hoare annotation was computed. [2021-11-21 01:38:22,505 INFO L854 garLoopResultBuilder]: At program point L259(lines 200 261) the Hoare annotation is: (or (= (bvadd (_ bv1 32) |ULTIMATE.start_main2_~sa~0#1|) (_ bv0 32)) (and (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32))) (and (= (_ bv1 32) |ULTIMATE.start_main2_~sa~0#1|) (= |ULTIMATE.start_main2_~tmp~2#1| (_ bv1 32)))) [2021-11-21 01:38:22,505 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:38:22,506 INFO L861 garLoopResultBuilder]: At program point L317(lines 263 319) the Hoare annotation is: true [2021-11-21 01:38:22,506 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-21 01:38:22,506 INFO L854 garLoopResultBuilder]: At program point L284(line 284) the Hoare annotation is: (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) [2021-11-21 01:38:22,506 INFO L858 garLoopResultBuilder]: For program point L284-1(line 284) no Hoare annotation was computed. [2021-11-21 01:38:22,506 INFO L854 garLoopResultBuilder]: At program point L260(lines 190 262) the Hoare annotation is: (or (and (= (_ bv0 32) |ULTIMATE.start_mulflt_#res#1|) (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32))) (= (bvadd (_ bv1 32) |ULTIMATE.start_main2_~sa~0#1|) (_ bv0 32)) (and (= (_ bv1 32) |ULTIMATE.start_main2_~sa~0#1|) (= |ULTIMATE.start_main2_~tmp~2#1| (_ bv1 32)))) [2021-11-21 01:38:22,506 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2021-11-21 01:38:22,507 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 295) no Hoare annotation was computed. [2021-11-21 01:38:22,507 INFO L858 garLoopResultBuilder]: For program point L286-2(lines 286 295) no Hoare annotation was computed. [2021-11-21 01:38:22,507 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-21 01:38:22,508 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 307) no Hoare annotation was computed. [2021-11-21 01:38:22,508 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2021-11-21 01:38:22,508 INFO L858 garLoopResultBuilder]: For program point L237(lines 237 254) no Hoare annotation was computed. [2021-11-21 01:38:22,508 INFO L858 garLoopResultBuilder]: For program point L303-2(lines 303 307) no Hoare annotation was computed. [2021-11-21 01:38:22,509 INFO L858 garLoopResultBuilder]: For program point L237-2(lines 237 254) no Hoare annotation was computed. [2021-11-21 01:38:22,509 INFO L858 garLoopResultBuilder]: For program point L320(lines 320 326) no Hoare annotation was computed. [2021-11-21 01:38:22,509 INFO L858 garLoopResultBuilder]: For program point L246(lines 246 251) no Hoare annotation was computed. [2021-11-21 01:38:22,509 INFO L858 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-11-21 01:38:22,509 INFO L858 garLoopResultBuilder]: For program point L238(lines 238 243) no Hoare annotation was computed. [2021-11-21 01:38:22,509 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-21 01:38:22,510 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 227) no Hoare annotation was computed. [2021-11-21 01:38:22,510 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-11-21 01:38:22,510 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 325) no Hoare annotation was computed. [2021-11-21 01:38:22,510 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2021-11-21 01:38:22,510 INFO L858 garLoopResultBuilder]: For program point L289(lines 289 293) no Hoare annotation was computed. [2021-11-21 01:38:22,510 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:38:22,511 INFO L858 garLoopResultBuilder]: For program point L289-2(lines 289 293) no Hoare annotation was computed. [2021-11-21 01:38:22,511 INFO L861 garLoopResultBuilder]: At program point L281(line 281) the Hoare annotation is: true [2021-11-21 01:38:22,511 INFO L858 garLoopResultBuilder]: For program point L281-1(line 281) no Hoare annotation was computed. [2021-11-21 01:38:22,511 INFO L861 garLoopResultBuilder]: At program point L50(lines 37 51) the Hoare annotation is: true [2021-11-21 01:38:22,511 INFO L858 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2021-11-21 01:38:22,511 INFO L854 garLoopResultBuilder]: At program point L282(line 282) the Hoare annotation is: (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) [2021-11-21 01:38:22,512 INFO L858 garLoopResultBuilder]: For program point L282-1(line 282) no Hoare annotation was computed. [2021-11-21 01:38:22,512 INFO L858 garLoopResultBuilder]: For program point L299(lines 299 315) no Hoare annotation was computed. [2021-11-21 01:38:22,512 INFO L858 garLoopResultBuilder]: For program point L299-1(lines 299 315) no Hoare annotation was computed. [2021-11-21 01:38:22,512 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 58 63) the Hoare annotation is: true [2021-11-21 01:38:22,513 INFO L858 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2021-11-21 01:38:22,513 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2021-11-21 01:38:22,513 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 58 63) no Hoare annotation was computed. [2021-11-21 01:38:22,513 INFO L858 garLoopResultBuilder]: For program point L59-2(lines 58 63) no Hoare annotation was computed. [2021-11-21 01:38:22,513 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 60) no Hoare annotation was computed. [2021-11-21 01:38:22,517 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:22,519 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:38:22,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:38:22 BoogieIcfgContainer [2021-11-21 01:38:22,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:38:22,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:38:22,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:38:22,559 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:38:22,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:34:03" (3/4) ... [2021-11-21 01:38:22,563 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 01:38:22,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2021-11-21 01:38:22,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-21 01:38:22,581 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-21 01:38:22,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-21 01:38:22,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 01:38:22,583 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 01:38:22,616 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32) [2021-11-21 01:38:22,616 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) && (~bvult32(m, 16777216bv32) || !(\old(m) == 1bv32)) [2021-11-21 01:38:22,616 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && (!~bvsle32(~bvadd64(4294967292bv32, e), 4294967168bv32) || !(\old(e) == 0bv32))) && !~bvult32(\old(m), 16777216bv32) [2021-11-21 01:38:22,616 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) [2021-11-21 01:38:22,620 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((0bv32 == \result && __retres10 == 0bv32) && zero == 0bv32) || ~bvadd64(1bv32, sa) == 0bv32) || (1bv32 == sa && tmp == 1bv32) [2021-11-21 01:38:22,665 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:38:22,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:38:22,666 INFO L158 Benchmark]: Toolchain (without parser) took 262373.85ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 51.0MB in the beginning and 65.0MB in the end (delta: -14.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-21 01:38:22,666 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 69.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:38:22,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.53ms. Allocated memory is still 69.2MB. Free memory was 50.8MB in the beginning and 48.9MB in the end (delta: 1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:38:22,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.89ms. Allocated memory is still 69.2MB. Free memory was 48.9MB in the beginning and 46.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:38:22,668 INFO L158 Benchmark]: Boogie Preprocessor took 55.62ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 45.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:38:22,669 INFO L158 Benchmark]: RCFGBuilder took 2755.71ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 45.1MB in the beginning and 71.0MB in the end (delta: -25.9MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-11-21 01:38:22,670 INFO L158 Benchmark]: TraceAbstraction took 258997.73ms. Allocated memory is still 90.2MB. Free memory was 70.6MB in the beginning and 70.1MB in the end (delta: 475.0kB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2021-11-21 01:38:22,670 INFO L158 Benchmark]: Witness Printer took 107.00ms. Allocated memory is still 90.2MB. Free memory was 70.1MB in the beginning and 65.0MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:38:22,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 69.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.53ms. Allocated memory is still 69.2MB. Free memory was 50.8MB in the beginning and 48.9MB in the end (delta: 1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.89ms. Allocated memory is still 69.2MB. Free memory was 48.9MB in the beginning and 46.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.62ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 45.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2755.71ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 45.1MB in the beginning and 71.0MB in the end (delta: -25.9MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 258997.73ms. Allocated memory is still 90.2MB. Free memory was 70.6MB in the beginning and 70.1MB in the end (delta: 475.0kB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Witness Printer took 107.00ms. Allocated memory is still 90.2MB. Free memory was 70.1MB in the beginning and 65.0MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 60]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 258.9s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 27.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 573 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 573 mSDsluCounter, 3678 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 261 IncrementalHoareTripleChecker+Unchecked, 2858 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1438 IncrementalHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 820 mSDtfsCounter, 1438 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2665 GetRequests, 2471 SyntacticMatches, 4 SemanticMatches, 190 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 45.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=11, InterpolantAutomatonStates: 133, 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, 14 MinimizatonAttempts, 105 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 137 PreInvPairs, 382 NumberOfFragments, 128 HoareAnnotationTreeSize, 137 FomulaSimplifications, 1719 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 900 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 15.3s SatisfiabilityAnalysisTime, 208.3s InterpolantComputationTime, 1321 NumberOfCodeBlocks, 1321 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2590 ConstructedInterpolants, 4 QuantifiedInterpolants, 5346 SizeOfPredicates, 63 NumberOfNonLiveVariables, 2478 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 52 InterpolantComputations, 17 PerfectInterpolantSequences, 1436/1728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: (~bvadd64(1bv32, sa) == 0bv32 || (__retres10 == 0bv32 && zero == 0bv32)) || (1bv32 == sa && tmp == 1bv32) - InvariantResult [Line: 263]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: ((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && (!~bvsle32(~bvadd64(4294967292bv32, e), 4294967168bv32) || !(\old(e) == 0bv32))) && !~bvult32(\old(m), 16777216bv32) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) && (~bvult32(m, 16777216bv32) || !(\old(m) == 1bv32)) - InvariantResult [Line: 190]: Loop Invariant Derived loop invariant: (((0bv32 == \result && __retres10 == 0bv32) && zero == 0bv32) || ~bvadd64(1bv32, sa) == 0bv32) || (1bv32 == sa && tmp == 1bv32) RESULT: Ultimate proved your program to be correct! [2021-11-21 01:38:22,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b505b84-941a-4fe9-a16a-9eaf74777996/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE