./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V --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 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:02,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:02,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:02,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:02,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:02,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:02,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:02,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:02,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:02,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:02,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:02,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:02,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:02,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:02,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:02,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:02,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:02,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:02,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:02,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:02,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:02,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:02,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:02,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:02,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:02,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:02,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:02,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:02,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:02,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:02,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:02,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:02,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:02,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:02,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:02,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:02,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:02,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:02,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:02,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:02,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:02,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:16:02,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:02,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:02,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:02,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:02,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:02,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:02,547 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:02,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:02,547 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:02,547 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:16:02,548 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:02,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:02,548 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:16:02,548 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:16:02,549 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:02,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:16:02,549 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:16:02,549 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:16:02,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:02,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:16:02,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:16:02,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:16:02,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:02,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:16:02,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:02,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:16:02,552 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:16:02,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:16:02,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:02,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:16:02,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:02,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:02,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:02,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:02,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:02,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:16:02,555 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:16:02,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:16:02,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:16:02,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:02,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:02,556 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_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2021-11-23 02:16:02,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:02,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:02,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:02,826 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:02,827 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:02,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-11-23 02:16:02,889 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/data/6a45328cc/b0d59e911702430ca3ab1cdf3ba71263/FLAG84d2f7517 [2021-11-23 02:16:03,319 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:03,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-11-23 02:16:03,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/data/6a45328cc/b0d59e911702430ca3ab1cdf3ba71263/FLAG84d2f7517 [2021-11-23 02:16:03,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/data/6a45328cc/b0d59e911702430ca3ab1cdf3ba71263 [2021-11-23 02:16:03,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:03,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:03,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:03,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:03,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:03,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:03" (1/1) ... [2021-11-23 02:16:03,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcd9637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:03, skipping insertion in model container [2021-11-23 02:16:03,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:03" (1/1) ... [2021-11-23 02:16:03,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:03,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:03,912 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_fc02a4ad-fd13-4994-b3da-28403cc1eb70/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-11-23 02:16:03,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:03,955 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:03,965 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_fc02a4ad-fd13-4994-b3da-28403cc1eb70/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-11-23 02:16:03,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:04,000 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:04,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04 WrapperNode [2021-11-23 02:16:04,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:04,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:04,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:04,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:04,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,043 INFO L137 Inliner]: procedures = 42, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2021-11-23 02:16:04,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:04,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:04,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:04,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:04,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:16:04,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:16:04,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:16:04,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:16:04,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:04,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:04,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:16:04,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:16:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:16:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:16:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:16:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:16:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:16:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 02:16:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:16:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:16:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:16:04,301 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:16:04,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:16:04,522 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:16:04,610 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:16:04,610 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:16:04,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:04 BoogieIcfgContainer [2021-11-23 02:16:04,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:16:04,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:16:04,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:16:04,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:16:04,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:03" (1/3) ... [2021-11-23 02:16:04,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f204b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:04, skipping insertion in model container [2021-11-23 02:16:04,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (2/3) ... [2021-11-23 02:16:04,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f204b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:04, skipping insertion in model container [2021-11-23 02:16:04,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:04" (3/3) ... [2021-11-23 02:16:04,625 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-11-23 02:16:04,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:16:04,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:16:04,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:16:04,683 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 [2021-11-23 02:16:04,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:16:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:16:04,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:04,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:04,726 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1869257227, now seen corresponding path program 1 times [2021-11-23 02:16:04,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:04,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645143076] [2021-11-23 02:16:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:04,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:04,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:04,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645143076] [2021-11-23 02:16:04,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645143076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:04,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:04,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:16:04,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672754780] [2021-11-23 02:16:04,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:04,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:04,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:04,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:04,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:04,922 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:04,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:04,966 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2021-11-23 02:16:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:04,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:16:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:04,976 INFO L225 Difference]: With dead ends: 43 [2021-11-23 02:16:04,977 INFO L226 Difference]: Without dead ends: 20 [2021-11-23 02:16:04,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:04,983 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:04,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-23 02:16:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-23 02:16:05,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2021-11-23 02:16:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-11-23 02:16:05,015 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2021-11-23 02:16:05,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:05,016 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-11-23 02:16:05,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-23 02:16:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:16:05,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:05,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:05,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:16:05,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2097630440, now seen corresponding path program 1 times [2021-11-23 02:16:05,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:05,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441510270] [2021-11-23 02:16:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:05,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:05,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:05,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441510270] [2021-11-23 02:16:05,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441510270] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:05,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716319140] [2021-11-23 02:16:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:05,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:05,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:05,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:05,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:16:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:05,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:05,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:05,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716319140] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:05,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1135715038] [2021-11-23 02:16:05,350 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-23 02:16:05,351 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:05,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:05,360 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:05,361 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:05,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:05,462 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:16:05,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:16:05,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:05,512 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:16:05,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:16:05,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:05,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-23 02:16:05,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:16:05,771 INFO L354 Elim1Store]: treesize reduction 86, result has 23.2 percent of original size [2021-11-23 02:16:05,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 196 treesize of output 193 [2021-11-23 02:16:05,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 02:16:05,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:16:06,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:16:06,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:06,461 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:07,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1135715038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:07,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:07,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [3, 3, 3] total 13 [2021-11-23 02:16:07,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131389207] [2021-11-23 02:16:07,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:07,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:16:07,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:16:07,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:16:07,345 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:07,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:07,522 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-11-23 02:16:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:16:07,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 02:16:07,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:07,524 INFO L225 Difference]: With dead ends: 46 [2021-11-23 02:16:07,525 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 02:16:07,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:16:07,527 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:07,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 31 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:07,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 02:16:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-23 02:16:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-23 02:16:07,533 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-11-23 02:16:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:07,533 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-23 02:16:07,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-23 02:16:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:16:07,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:07,534 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:07,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:07,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:07,763 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:07,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1635510525, now seen corresponding path program 1 times [2021-11-23 02:16:07,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:07,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093402235] [2021-11-23 02:16:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:07,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:16:07,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:07,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093402235] [2021-11-23 02:16:07,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093402235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:07,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232052474] [2021-11-23 02:16:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:07,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:07,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:07,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:07,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:16:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:07,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:07,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:16:07,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:16:07,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232052474] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [972472205] [2021-11-23 02:16:07,992 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:16:07,992 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:07,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:07,993 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:07,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:08,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:08,045 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:16:08,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:16:08,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:08,069 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:16:08,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:16:08,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:08,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2021-11-23 02:16:08,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:08,188 INFO L354 Elim1Store]: treesize reduction 90, result has 14.3 percent of original size [2021-11-23 02:16:08,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 202 treesize of output 192 [2021-11-23 02:16:08,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 02:16:08,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:16:08,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:08,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:16:08,763 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:10,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [972472205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:10,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:10,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 21 [2021-11-23 02:16:10,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159950936] [2021-11-23 02:16:10,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:10,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 02:16:10,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:10,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 02:16:10,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:16:10,441 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-11-23 02:16:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:11,060 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-11-23 02:16:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:16:11,061 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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 20 [2021-11-23 02:16:11,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:11,062 INFO L225 Difference]: With dead ends: 38 [2021-11-23 02:16:11,062 INFO L226 Difference]: Without dead ends: 36 [2021-11-23 02:16:11,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:16:11,063 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:11,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:11,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-23 02:16:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-11-23 02:16:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-11-23 02:16:11,072 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2021-11-23 02:16:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:11,072 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-11-23 02:16:11,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-11-23 02:16:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-11-23 02:16:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 02:16:11,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:11,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:11,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:11,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:11,295 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:11,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash 304009, now seen corresponding path program 1 times [2021-11-23 02:16:11,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:11,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035184294] [2021-11-23 02:16:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:11,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:16:11,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:11,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035184294] [2021-11-23 02:16:11,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035184294] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:11,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761250072] [2021-11-23 02:16:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:11,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:11,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:11,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:11,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:16:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:11,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:11,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:16:11,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:16:11,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761250072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:11,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911768422] [2021-11-23 02:16:11,554 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:16:11,554 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:11,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:11,555 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:11,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:11,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:11,605 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:16:11,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:16:11,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:11,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:16:11,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:11,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2021-11-23 02:16:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:11,696 INFO L354 Elim1Store]: treesize reduction 90, result has 14.3 percent of original size [2021-11-23 02:16:11,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 202 treesize of output 192 [2021-11-23 02:16:11,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 02:16:11,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:11,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:16:11,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:16:12,395 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:13,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [911768422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:13,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:13,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 21 [2021-11-23 02:16:13,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199922759] [2021-11-23 02:16:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:13,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 02:16:13,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 02:16:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:16:13,726 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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) [2021-11-23 02:16:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:14,341 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2021-11-23 02:16:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:16:14,342 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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 22 [2021-11-23 02:16:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:14,351 INFO L225 Difference]: With dead ends: 47 [2021-11-23 02:16:14,351 INFO L226 Difference]: Without dead ends: 45 [2021-11-23 02:16:14,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:16:14,353 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 39 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:14,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 36 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-23 02:16:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2021-11-23 02:16:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-11-23 02:16:14,361 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2021-11-23 02:16:14,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:14,361 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-11-23 02:16:14,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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) [2021-11-23 02:16:14,362 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-11-23 02:16:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 02:16:14,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:14,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:14,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:14,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:14,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash 316013492, now seen corresponding path program 1 times [2021-11-23 02:16:14,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:14,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517763454] [2021-11-23 02:16:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:14,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:16:14,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:14,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517763454] [2021-11-23 02:16:14,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517763454] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:14,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375430076] [2021-11-23 02:16:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:14,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:14,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:14,629 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:14,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:16:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:14,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:14,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:16:14,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:16:14,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375430076] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1533159650] [2021-11-23 02:16:14,772 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:16:14,772 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:14,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:14,773 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:14,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:14,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:14,806 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:16:14,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:16:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:14,828 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:16:14,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:16:14,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:14,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2021-11-23 02:16:14,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:14,913 INFO L354 Elim1Store]: treesize reduction 90, result has 14.3 percent of original size [2021-11-23 02:16:14,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 202 treesize of output 192 [2021-11-23 02:16:14,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 02:16:14,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:16:14,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:14,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:16:15,511 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:16,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1533159650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:16,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:16,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3, 3] total 20 [2021-11-23 02:16:16,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537693706] [2021-11-23 02:16:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:16,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:16:16,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:16,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:16:16,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:16:16,809 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-11-23 02:16:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:17,148 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2021-11-23 02:16:17,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:16:17,148 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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 22 [2021-11-23 02:16:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:17,149 INFO L225 Difference]: With dead ends: 53 [2021-11-23 02:16:17,149 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 02:16:17,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:16:17,155 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:17,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 41 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 02:16:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2021-11-23 02:16:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 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) [2021-11-23 02:16:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2021-11-23 02:16:17,173 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 22 [2021-11-23 02:16:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:17,174 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-11-23 02:16:17,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-11-23 02:16:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2021-11-23 02:16:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:16:17,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:17,176 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:17,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:17,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:17,399 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:17,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1020992384, now seen corresponding path program 1 times [2021-11-23 02:16:17,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:17,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687181493] [2021-11-23 02:16:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:17,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:16:17,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:17,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687181493] [2021-11-23 02:16:17,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687181493] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:17,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101178040] [2021-11-23 02:16:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:17,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:17,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:17,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:17,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:16:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:17,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:16:17,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:16:17,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:16:17,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101178040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:17,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1928537146] [2021-11-23 02:16:17,600 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:16:17,600 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:17,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:17,601 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:17,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:16:17,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:17,637 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:16:17,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:16:17,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:17,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:16:17,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:17,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-23 02:16:17,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:16:17,719 INFO L354 Elim1Store]: treesize reduction 86, result has 23.2 percent of original size [2021-11-23 02:16:17,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 196 treesize of output 193 [2021-11-23 02:16:17,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 02:16:17,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:16:17,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:16:17,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:16:18,489 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:19,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1928537146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:19,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:16:19,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3, 3] total 20 [2021-11-23 02:16:19,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494899582] [2021-11-23 02:16:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:19,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:16:19,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:16:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:16:19,766 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:20,046 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-11-23 02:16:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:16:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 02:16:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:20,048 INFO L225 Difference]: With dead ends: 40 [2021-11-23 02:16:20,048 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:16:20,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:16:20,049 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 31 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:20,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:16:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:16:20,050 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) [2021-11-23 02:16:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:16:20,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-11-23 02:16:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:20,051 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:16:20,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:16:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:16:20,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:16:20,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:16:20,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:16:20,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:16:20,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:16:21,266 INFO L861 garLoopResultBuilder]: At program point L85(lines 58 86) the Hoare annotation is: true [2021-11-23 02:16:21,266 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:16:21,266 INFO L858 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2021-11-23 02:16:21,266 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-11-23 02:16:21,266 INFO L854 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: (and (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2021-11-23 02:16:21,267 INFO L858 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2021-11-23 02:16:21,267 INFO L858 garLoopResultBuilder]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2021-11-23 02:16:21,267 INFO L858 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2021-11-23 02:16:21,267 INFO L854 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: (let ((.cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (.cse0 (<= 0 |ULTIMATE.start_main_~#A~0#1.base|)) (.cse1 (= |ULTIMATE.start_main_~#A~0#1.offset| 0)) (.cse3 (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0)) (.cse4 (<= 8 |ULTIMATE.start_main_~i~1#1|)) (.cse5 (= |#NULL.offset| 0)) (.cse6 (<= 0 |#StackHeapBarrier|)) (.cse7 (= |#NULL.base| 0))) (or (and (= 1 (select |#valid| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 8)) 0) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 0) .cse0 (< |#StackHeapBarrier| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.base| |ULTIMATE.start_main_~#A~0#1.base|) (= (+ |ULTIMATE.start_parse_expression_list_~i~0#1| 1) 0) (not (= |ULTIMATE.start_parse_expression_list_~str#1.base| 0)) .cse1 (= |ULTIMATE.start_parse_expression_list_~str#1.base| |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= .cse2 0) (= |ULTIMATE.start_main_~#A~0#1.offset| |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= 2 (select |#length| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|)) .cse3 .cse4 .cse5 .cse6 (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| |ULTIMATE.start_parse_expression_list_~str#1.offset|) .cse7) (and (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (let ((.cse8 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (and (< 0 .cse2) (= (select .cse8 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34)) (and (<= 0 .cse2) (<= |ULTIMATE.start_parse_expression_list_~j~0#1| 0)) (let ((.cse9 (select .cse8 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse9)) (not (= 32 .cse9)) (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|) (not (= 34 .cse9)))))) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) .cse0 (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) .cse1 (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) .cse3 .cse4 .cse5 (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) .cse6 .cse7))) [2021-11-23 02:16:21,267 INFO L858 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2021-11-23 02:16:21,267 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-11-23 02:16:21,268 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_parse_expression_list_~j~0#1| (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1)))) (and (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.base| |ULTIMATE.start_r_strncpy_#in~dest#1.base|) .cse0 (= |ULTIMATE.start_r_strncpy_~src#1.offset| |ULTIMATE.start_r_strncpy_#in~src#1.offset|) (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (= (+ |ULTIMATE.start_r_strncpy_#in~n#1| |ULTIMATE.start_parse_expression_list_~start~0#1|) (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~j~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite .cse0 1 0)) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (let ((.cse1 (select .cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse1)) (not (= 32 .cse1)) (not (= 34 .cse1)))) (<= |ULTIMATE.start_parse_expression_list_~j~0#1| 0) (= (select .cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34))) (= |ULTIMATE.start_parse_expression_list_~str#1.base| |ULTIMATE.start_r_strncpy_#in~src#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|) |ULTIMATE.start_r_strncpy_#in~src#1.offset|) (= |ULTIMATE.start_r_strncpy_~n#1| |ULTIMATE.start_r_strncpy_#in~n#1|) (= |ULTIMATE.start_r_strncpy_~dest#1.offset| |ULTIMATE.start_r_strncpy_#in~dest#1.offset|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| |ULTIMATE.start_r_strncpy_#in~dest#1.offset|) (= |ULTIMATE.start_r_strncpy_~dest#1.base| |ULTIMATE.start_r_strncpy_#in~dest#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_r_strncpy_#in~src#1.base| |ULTIMATE.start_r_strncpy_~src#1.base|) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 02:16:21,268 INFO L854 garLoopResultBuilder]: At program point L73(lines 73 75) the Hoare annotation is: (and (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~j~0#1|) (let ((.cse1 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (let ((.cse0 (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse0)) (not (= 32 .cse0)) (not (= 34 .cse0)))) (<= |ULTIMATE.start_parse_expression_list_~j~0#1| 0) (= (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34))) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2021-11-23 02:16:21,268 INFO L858 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2021-11-23 02:16:21,268 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-23 02:16:21,268 INFO L854 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2021-11-23 02:16:21,268 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-11-23 02:16:21,269 INFO L858 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2021-11-23 02:16:21,269 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:16:21,269 INFO L858 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2021-11-23 02:16:21,269 INFO L854 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: (and (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (let ((.cse0 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (.cse1 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (and (< 0 .cse0) (= (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34)) (and (<= 0 .cse0) (<= |ULTIMATE.start_parse_expression_list_~j~0#1| 0)) (let ((.cse2 (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse2)) (not (= 32 .cse2)) (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|) (not (= 34 .cse2)))))) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2021-11-23 02:16:21,269 INFO L858 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2021-11-23 02:16:21,272 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-23 02:16:21,274 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:16:21,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:16:21 BoogieIcfgContainer [2021-11-23 02:16:21,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:16:21,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:16:21,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:16:21,311 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:16:21,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:04" (3/4) ... [2021-11-23 02:16:21,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:16:21,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2021-11-23 02:16:21,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-23 02:16:21,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 02:16:21,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:16:21,352 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((str2 == dest && j < start + 1) && src == src) && str <= 0) && \old(n) + start == j + 1) && 0 <= str2) && 0 <= A) && start <= j) && \old(cond) == (if j < start + 1 then 1 else 0)) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || j <= 0) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && str == src) && 0 <= str) && 0 <= str) && 0 <= str) && start + str == src) && n == \old(n)) && dest == dest) && str2 == dest) && dest == dest) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && cond == \old(cond)) && #NULL == 0) && src == src) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 [2021-11-23 02:16:21,389 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:16:21,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:16:21,390 INFO L158 Benchmark]: Toolchain (without parser) took 17680.32ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 64.0MB in the beginning and 95.3MB in the end (delta: -31.2MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-11-23 02:16:21,390 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory was 62.1MB in the beginning and 62.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:16:21,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.80ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 64.0MB in the beginning and 81.1MB in the end (delta: -17.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:16:21,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.63ms. Allocated memory is still 107.0MB. Free memory was 81.1MB in the beginning and 79.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:16:21,391 INFO L158 Benchmark]: Boogie Preprocessor took 27.87ms. Allocated memory is still 107.0MB. Free memory was 79.1MB in the beginning and 77.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:16:21,392 INFO L158 Benchmark]: RCFGBuilder took 539.49ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 61.4MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 02:16:21,392 INFO L158 Benchmark]: TraceAbstraction took 16695.82ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 60.9MB in the beginning and 100.5MB in the end (delta: -39.6MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-11-23 02:16:21,393 INFO L158 Benchmark]: Witness Printer took 78.45ms. Allocated memory is still 130.0MB. Free memory was 100.5MB in the beginning and 95.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:16:21,395 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory was 62.1MB in the beginning and 62.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.80ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 64.0MB in the beginning and 81.1MB in the end (delta: -17.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.63ms. Allocated memory is still 107.0MB. Free memory was 81.1MB in the beginning and 79.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.87ms. Allocated memory is still 107.0MB. Free memory was 79.1MB in the beginning and 77.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 539.49ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 61.4MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16695.82ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 60.9MB in the beginning and 100.5MB in the end (delta: -39.6MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. * Witness Printer took 78.45ms. Allocated memory is still 130.0MB. Free memory was 100.5MB in the beginning and 95.3MB in the end (delta: 5.2MB). 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: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.6s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 195 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 170 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 864 IncrementalHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 33 mSDtfsCounter, 864 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 224 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 23 NumberOfFragments, 614 HoareAnnotationTreeSize, 7 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3625 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 615 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 48/63 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: OVERALL_TIME: 4.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 89, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 157, TOOLS_POST_TIME: 3.7s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 157, TOOLS_QUANTIFIERELIM_TIME: 3.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 317, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 14, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 33, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 89, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 13, LOOP_SUMMARIZER_CACHE_MISSES: 13, LOOP_SUMMARIZER_OVERALL_TIME: 1.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 33, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1655, DAG_COMPRESSION_RETAINED_NODES: 256, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: (((((((((((((((str <= 0 && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= j + 1) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: ((((((((((((((((((1 == \valid[str2] && unknown-#memory_int-unknown[A][A + 8] == 0) && start == 0) && 0 <= A) && unknown-#StackHeapBarrier-unknown < str2) && str == A) && i + 1 == 0) && !(str == 0)) && A == 0) && str == str) && j + 1 == 0) && A == str) && 2 == unknown-#length-unknown[str2]) && str2 == 0) && 8 <= i) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && str == str) && #NULL == 0) || ((((((((((((((((str <= 0 && (((0 < j + 1 && unknown-#memory_int-unknown[str][j + str + 1] == 34) || (0 <= j + 1 && j <= 0)) || (((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && 0 < j) && !(34 == unknown-#memory_int-unknown[str][j + str])))) && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: ((((((((((((((((str <= 0 && 0 <= str2) && 0 <= A) && start <= j) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || j <= 0) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: (((((((((((((((str <= 0 && (((0 < j + 1 && unknown-#memory_int-unknown[str][j + str + 1] == 34) || (0 <= j + 1 && j <= 0)) || (((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && 0 < j) && !(34 == unknown-#memory_int-unknown[str][j + str])))) && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((str2 == dest && j < start + 1) && src == src) && str <= 0) && \old(n) + start == j + 1) && 0 <= str2) && 0 <= A) && start <= j) && \old(cond) == (if j < start + 1 then 1 else 0)) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || j <= 0) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && str == src) && 0 <= str) && 0 <= str) && 0 <= str) && start + str == src) && n == \old(n)) && dest == dest) && str2 == dest) && dest == dest) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && cond == \old(cond)) && #NULL == 0) && src == src) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: ((((0 <= i && 0 <= A) && A == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2021-11-23 02:16:21,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc02a4ad-fd13-4994-b3da-28403cc1eb70/bin/utaipan-EQgc7hIp5V/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