./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapsum1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/mapsum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0 --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 befec220f7e47e3c672ecda510923d232ca8d73dd5b744e98031f552117225df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:06:04,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:06:04,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:06:04,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:06:04,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:06:04,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:06:04,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:06:04,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:06:04,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:06:04,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:06:04,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:06:04,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:06:04,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:06:04,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:06:04,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:06:04,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:06:04,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:06:04,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:06:04,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:06:04,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:06:04,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:06:04,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:06:04,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:06:04,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:06:04,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:06:04,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:06:04,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:06:04,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:06:04,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:06:04,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:06:04,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:06:04,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:06:04,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:06:04,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:06:04,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:06:04,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:06:04,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:06:04,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:06:04,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:06:04,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:06:04,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:06:04,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:06:04,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:06:04,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:06:04,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:06:04,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:06:04,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:06:04,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:06:04,580 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:06:04,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:06:04,581 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:06:04,581 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:06:04,582 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:06:04,582 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:06:04,583 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:06:04,583 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:06:04,583 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:06:04,583 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:06:04,583 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:06:04,584 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:06:04,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:06:04,584 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:06:04,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:06:04,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:06:04,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:06:04,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:06:04,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:06:04,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:06:04,586 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:06:04,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:06:04,586 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:06:04,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:06:04,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:06:04,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:06:04,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:06:04,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:06:04,588 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:06:04,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:06:04,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:06:04,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:06:04,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:06:04,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:06:04,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:06:04,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> befec220f7e47e3c672ecda510923d232ca8d73dd5b744e98031f552117225df [2022-11-16 20:06:04,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:06:04,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:06:04,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:06:04,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:06:04,948 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:06:04,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/array-crafted/mapsum1.i [2022-11-16 20:06:05,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/data/8b481887c/88fb97d6729b4651906ec66888566633/FLAG25766338f [2022-11-16 20:06:05,468 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:06:05,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/sv-benchmarks/c/array-crafted/mapsum1.i [2022-11-16 20:06:05,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/data/8b481887c/88fb97d6729b4651906ec66888566633/FLAG25766338f [2022-11-16 20:06:05,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/data/8b481887c/88fb97d6729b4651906ec66888566633 [2022-11-16 20:06:05,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:06:05,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:06:05,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:06:05,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:06:05,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:06:05,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2426ddf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05, skipping insertion in model container [2022-11-16 20:06:05,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:06:05,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:06:06,167 WARN L229 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_77dbf119-64e9-4059-8336-802700cd1832/sv-benchmarks/c/array-crafted/mapsum1.i[1300,1313] [2022-11-16 20:06:06,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:06:06,183 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:06:06,224 WARN L229 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_77dbf119-64e9-4059-8336-802700cd1832/sv-benchmarks/c/array-crafted/mapsum1.i[1300,1313] [2022-11-16 20:06:06,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:06:06,246 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:06:06,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06 WrapperNode [2022-11-16 20:06:06,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:06:06,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:06:06,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:06:06,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:06:06,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,290 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-16 20:06:06,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:06:06,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:06:06,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:06:06,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:06:06,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,318 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:06:06,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:06:06,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:06:06,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:06:06,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (1/1) ... [2022-11-16 20:06:06,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:06:06,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:06,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:06:06,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:06:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:06:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2022-11-16 20:06:06,417 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2022-11-16 20:06:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:06:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:06:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:06:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:06:06,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:06:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:06:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:06:06,499 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:06:06,501 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:06:06,679 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:06:06,725 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:06:06,726 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 20:06:06,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:06:06 BoogieIcfgContainer [2022-11-16 20:06:06,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:06:06,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:06:06,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:06:06,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:06:06,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:06:05" (1/3) ... [2022-11-16 20:06:06,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157ae02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:06:06, skipping insertion in model container [2022-11-16 20:06:06,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06" (2/3) ... [2022-11-16 20:06:06,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157ae02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:06:06, skipping insertion in model container [2022-11-16 20:06:06,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:06:06" (3/3) ... [2022-11-16 20:06:06,747 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum1.i [2022-11-16 20:06:06,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:06:06,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:06:06,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:06:06,836 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63abcd1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:06:06,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:06:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 20:06:06,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:06,851 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:06,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1911737406, now seen corresponding path program 1 times [2022-11-16 20:06:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:06,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271307178] [2022-11-16 20:06:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 20:06:07,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:07,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271307178] [2022-11-16 20:06:07,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271307178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:07,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:07,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:06:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72287560] [2022-11-16 20:06:07,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:07,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:06:07,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:06:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:07,403 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 20:06:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:07,461 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-11-16 20:06:07,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:06:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-11-16 20:06:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:07,483 INFO L225 Difference]: With dead ends: 33 [2022-11-16 20:06:07,484 INFO L226 Difference]: Without dead ends: 16 [2022-11-16 20:06:07,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:07,491 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:07,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:06:07,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-16 20:06:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-16 20:06:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-16 20:06:07,535 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-11-16 20:06:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:07,536 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-16 20:06:07,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 20:06:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-16 20:06:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 20:06:07,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:07,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:06:07,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -242274518, now seen corresponding path program 1 times [2022-11-16 20:06:07,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:07,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930489110] [2022-11-16 20:06:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 20:06:07,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:07,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930489110] [2022-11-16 20:06:07,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930489110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:07,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103984737] [2022-11-16 20:06:07,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:07,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:07,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:07,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:07,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:06:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:07,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:06:07,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:06:07,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:06:07,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103984737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:07,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:06:07,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 20:06:07,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407379710] [2022-11-16 20:06:07,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:07,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:06:07,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:07,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:06:07,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:06:07,923 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:06:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:07,962 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-11-16 20:06:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:06:07,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-11-16 20:06:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:07,966 INFO L225 Difference]: With dead ends: 29 [2022-11-16 20:06:07,966 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 20:06:07,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:06:07,969 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:07,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:06:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 20:06:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 20:06:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-16 20:06:07,975 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-11-16 20:06:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:07,976 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-16 20:06:07,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:06:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-16 20:06:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 20:06:07,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:07,977 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:07,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:08,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:08,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2071479167, now seen corresponding path program 1 times [2022-11-16 20:06:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:08,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594251659] [2022-11-16 20:06:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:08,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 20:06:08,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:08,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594251659] [2022-11-16 20:06:08,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594251659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:08,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701612193] [2022-11-16 20:06:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:08,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:08,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:08,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:08,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:06:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:08,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:06:08,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 20:06:08,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:06:08,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701612193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:08,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:06:08,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 20:06:08,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429563613] [2022-11-16 20:06:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:08,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:06:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:06:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:06:08,430 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:06:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:08,452 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-16 20:06:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:06:08,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-16 20:06:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:08,453 INFO L225 Difference]: With dead ends: 27 [2022-11-16 20:06:08,454 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 20:06:08,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:06:08,455 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:08,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:06:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 20:06:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-16 20:06:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-16 20:06:08,462 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-11-16 20:06:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:08,463 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-16 20:06:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:06:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-16 20:06:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 20:06:08,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:08,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:08,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:08,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:08,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash -535158977, now seen corresponding path program 1 times [2022-11-16 20:06:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:08,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768468238] [2022-11-16 20:06:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:08,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 20:06:08,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:08,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768468238] [2022-11-16 20:06:08,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768468238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:08,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317985568] [2022-11-16 20:06:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:08,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:08,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:08,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:08,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 20:06:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:08,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:06:08,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 20:06:08,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 20:06:09,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317985568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:09,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [342567476] [2022-11-16 20:06:09,051 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:06:09,051 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:06:09,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:06:09,061 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:06:09,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:06:09,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:09,192 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:06:09,193 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:09,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:09,237 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:06:09,238 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:09,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:09,311 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:06:09,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:09,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:06:09,483 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:06:09,484 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:06:09,661 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:06:09,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:09,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:06:10,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:10,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 20:06:10,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:10,145 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-16 20:06:10,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-16 20:06:10,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:06:10,270 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:10,472 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:06:10,520 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:06:13,700 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_5 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_5 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_5 4294967296) (- 4294967296))))) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:06:13,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:06:13,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:06:13,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-11-16 20:06:13,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190352705] [2022-11-16 20:06:13,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:06:13,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:06:13,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:06:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 20:06:13,703 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:06:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:13,762 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-16 20:06:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:06:13,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2022-11-16 20:06:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:13,763 INFO L225 Difference]: With dead ends: 36 [2022-11-16 20:06:13,763 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 20:06:13,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 20:06:13,765 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:13,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:06:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 20:06:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 20:06:13,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-16 20:06:13,771 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-11-16 20:06:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:13,771 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-16 20:06:13,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:06:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-16 20:06:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 20:06:13,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:13,773 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:13,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:13,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:13,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1059918509, now seen corresponding path program 2 times [2022-11-16 20:06:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:13,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640293537] [2022-11-16 20:06:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 20:06:14,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:14,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640293537] [2022-11-16 20:06:14,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640293537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217936305] [2022-11-16 20:06:14,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:06:14,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:14,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:14,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:06:14,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 20:06:14,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:06:14,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:06:14,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 20:06:14,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 20:06:14,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217936305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:14,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1655067230] [2022-11-16 20:06:14,316 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:06:14,316 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:06:14,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:06:14,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:06:14,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:06:14,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:14,361 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:06:14,361 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:14,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:14,393 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:06:14,394 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:14,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:14,421 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-11-16 20:06:14,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:14,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:14,497 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 20:06:14,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 20:06:14,549 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:06:14,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:14,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:06:14,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:14,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:06:14,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:06:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:14,833 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:06:14,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:06:14,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:06:14,897 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:15,036 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:06:15,077 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:06:20,283 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2022-11-16 20:06:20,284 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:06:20,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:06:20,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-16 20:06:20,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582883600] [2022-11-16 20:06:20,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:06:20,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:06:20,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:06:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2022-11-16 20:06:20,286 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:06:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:20,328 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-16 20:06:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:06:20,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2022-11-16 20:06:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:20,330 INFO L225 Difference]: With dead ends: 38 [2022-11-16 20:06:20,330 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 20:06:20,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2022-11-16 20:06:20,331 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:20,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:06:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 20:06:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 20:06:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-16 20:06:20,337 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-11-16 20:06:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:20,338 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-16 20:06:20,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:06:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-16 20:06:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 20:06:20,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:20,340 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:20,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:20,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:20,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:20,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:20,547 INFO L85 PathProgramCache]: Analyzing trace with hash 301103478, now seen corresponding path program 3 times [2022-11-16 20:06:20,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:20,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302201297] [2022-11-16 20:06:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:20,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 20:06:20,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302201297] [2022-11-16 20:06:20,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302201297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263432085] [2022-11-16 20:06:20,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:06:20,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:20,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:20,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:20,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 20:06:20,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:06:20,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:06:20,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 20:06:20,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 20:06:20,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 20:06:20,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263432085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:20,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [370008558] [2022-11-16 20:06:20,939 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:06:20,939 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:06:20,940 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:06:20,940 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:06:20,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:06:20,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:20,969 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:06:20,970 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:20,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:20,998 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:06:20,999 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:21,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:21,018 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:06:21,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:21,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:06:21,115 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:06:21,116 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:06:21,194 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:06:21,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:21,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:06:21,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:21,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:06:21,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:06:21,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:21,418 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:06:21,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:06:21,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:06:21,471 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:21,598 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:06:21,657 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:06:26,794 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_18 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:06:26,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:06:26,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:06:26,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2022-11-16 20:06:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52895455] [2022-11-16 20:06:26,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:06:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 20:06:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 20:06:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-11-16 20:06:26,797 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 20:06:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:26,871 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-11-16 20:06:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:06:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2022-11-16 20:06:26,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:26,872 INFO L225 Difference]: With dead ends: 49 [2022-11-16 20:06:26,872 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 20:06:26,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-11-16 20:06:26,874 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:26,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:06:26,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 20:06:26,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-16 20:06:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-16 20:06:26,880 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2022-11-16 20:06:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:26,880 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-16 20:06:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 20:06:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-16 20:06:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 20:06:26,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:26,883 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:26,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:27,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:27,084 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:27,085 INFO L85 PathProgramCache]: Analyzing trace with hash 884522878, now seen corresponding path program 4 times [2022-11-16 20:06:27,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:27,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884239489] [2022-11-16 20:06:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:27,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 20:06:27,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:27,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884239489] [2022-11-16 20:06:27,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884239489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:27,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677638571] [2022-11-16 20:06:27,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:06:27,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:27,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:27,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:27,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 20:06:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:27,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 20:06:27,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 20:06:27,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 20:06:27,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677638571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:27,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [762380172] [2022-11-16 20:06:27,834 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:06:27,834 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:06:27,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:06:27,835 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:06:27,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:06:27,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:27,870 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:06:27,870 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:27,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:27,891 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:27,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:27,913 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-11-16 20:06:27,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:27,976 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 20:06:27,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 20:06:28,018 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:06:28,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:28,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:06:28,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:28,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:06:28,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:06:28,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:28,278 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:06:28,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:06:28,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:06:28,332 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:28,492 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:06:28,527 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:06:29,648 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_24 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_24 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_24 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:06:29,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:06:29,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:06:29,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2022-11-16 20:06:29,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014260834] [2022-11-16 20:06:29,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:06:29,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 20:06:29,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:29,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 20:06:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 20:06:29,651 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:06:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:29,736 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-11-16 20:06:29,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 20:06:29,736 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-11-16 20:06:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:29,737 INFO L225 Difference]: With dead ends: 62 [2022-11-16 20:06:29,737 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 20:06:29,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 20:06:29,739 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:29,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:06:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 20:06:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-16 20:06:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-16 20:06:29,746 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2022-11-16 20:06:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:29,746 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-16 20:06:29,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:06:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-16 20:06:29,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 20:06:29,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:29,748 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:29,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:29,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash -49590146, now seen corresponding path program 5 times [2022-11-16 20:06:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:29,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100866828] [2022-11-16 20:06:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-16 20:06:30,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:30,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100866828] [2022-11-16 20:06:30,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100866828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:30,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612651879] [2022-11-16 20:06:30,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:06:30,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:30,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:30,799 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:30,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 20:06:30,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 20:06:30,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:06:30,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 20:06:30,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-16 20:06:31,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-16 20:06:31,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612651879] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:31,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [124803986] [2022-11-16 20:06:31,155 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:06:31,155 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:06:31,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:06:31,156 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:06:31,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:06:31,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:31,184 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:06:31,185 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:31,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:31,195 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:31,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:31,211 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-11-16 20:06:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:31,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:31,264 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 20:06:31,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 20:06:31,302 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:06:31,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:31,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:06:31,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:31,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 20:06:31,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:31,522 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-16 20:06:31,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-16 20:06:31,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:06:31,599 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:31,723 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:06:31,752 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:06:33,215 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:06:33,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:06:33,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:06:33,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2022-11-16 20:06:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959191196] [2022-11-16 20:06:33,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:06:33,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 20:06:33,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 20:06:33,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 20:06:33,219 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:06:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:33,333 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-11-16 20:06:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 20:06:33,336 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-11-16 20:06:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:33,337 INFO L225 Difference]: With dead ends: 69 [2022-11-16 20:06:33,337 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 20:06:33,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 20:06:33,339 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:33,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:06:33,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 20:06:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-16 20:06:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-11-16 20:06:33,346 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2022-11-16 20:06:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:33,346 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-11-16 20:06:33,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:06:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-11-16 20:06:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 20:06:33,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:33,348 INFO L195 NwaCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:33,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:33,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:33,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1858566262, now seen corresponding path program 6 times [2022-11-16 20:06:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:33,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222303861] [2022-11-16 20:06:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 20:06:34,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:34,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222303861] [2022-11-16 20:06:34,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222303861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:34,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909318998] [2022-11-16 20:06:34,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:06:34,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:34,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:34,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 20:06:34,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:06:34,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:06:34,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 20:06:34,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 20:06:34,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 20:06:35,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909318998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:35,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [27364349] [2022-11-16 20:06:35,645 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:06:35,646 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:06:35,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:06:35,646 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:06:35,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:06:35,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:35,676 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:06:35,676 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:35,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:35,686 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:35,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:35,703 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-11-16 20:06:35,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:35,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:35,789 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 20:06:35,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 20:06:35,823 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:06:35,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:35,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:06:35,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:35,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 20:06:35,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:36,002 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-16 20:06:36,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-11-16 20:06:36,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:06:36,060 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:36,163 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:06:36,190 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:06:37,437 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2862#(and (exists ((v_mapsum_~ret~0_BEFORE_RETURN_35 Int)) (= (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296))) |ULTIMATE.start_main_~ret5~0#1|)) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:06:37,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:06:37,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:06:37,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2022-11-16 20:06:37,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999020871] [2022-11-16 20:06:37,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:06:37,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-16 20:06:37,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-16 20:06:37,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 20:06:37,442 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:06:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:37,572 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2022-11-16 20:06:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 20:06:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2022-11-16 20:06:37,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:37,576 INFO L225 Difference]: With dead ends: 100 [2022-11-16 20:06:37,576 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 20:06:37,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 20:06:37,581 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:37,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:06:37,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 20:06:37,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-16 20:06:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-11-16 20:06:37,604 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2022-11-16 20:06:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:37,606 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-11-16 20:06:37,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:06:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-11-16 20:06:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 20:06:37,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:37,613 INFO L195 NwaCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:37,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:37,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 20:06:37,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash -248124130, now seen corresponding path program 7 times [2022-11-16 20:06:37,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:37,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347574855] [2022-11-16 20:06:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:37,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 20:06:40,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:40,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347574855] [2022-11-16 20:06:40,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347574855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:06:40,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11357981] [2022-11-16 20:06:40,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:06:40,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:40,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:40,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:06:40,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 20:06:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:40,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 20:06:40,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 20:06:40,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 20:06:44,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11357981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:44,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1491329106] [2022-11-16 20:06:44,241 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:06:44,242 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:06:44,242 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:06:44,242 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:06:44,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:06:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:44,280 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:06:44,280 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:44,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:44,290 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:44,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:44,309 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:06:44,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:44,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:06:44,376 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:06:44,376 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:06:44,452 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:06:44,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:44,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:06:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:44,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:06:44,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:06:44,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:06:44,639 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:06:44,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:06:44,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:06:44,702 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:06:44,798 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:06:44,827 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:06:52,474 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_41 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_41 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_41 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_41 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:06:52,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:06:52,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:06:52,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2022-11-16 20:06:52,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847252009] [2022-11-16 20:06:52,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:06:52,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-16 20:06:52,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-16 20:06:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-11-16 20:06:52,483 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:06:52,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:52,783 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2022-11-16 20:06:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-16 20:06:52,784 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-11-16 20:06:52,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:52,785 INFO L225 Difference]: With dead ends: 150 [2022-11-16 20:06:52,785 INFO L226 Difference]: Without dead ends: 125 [2022-11-16 20:06:52,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-11-16 20:06:52,794 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:52,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:06:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-16 20:06:52,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-16 20:06:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:06:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-11-16 20:06:52,826 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2022-11-16 20:06:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:52,827 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-11-16 20:06:52,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:06:52,828 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-11-16 20:06:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 20:06:52,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:52,834 INFO L195 NwaCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:52,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:53,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:53,043 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:53,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:53,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1563397790, now seen corresponding path program 8 times [2022-11-16 20:06:53,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:53,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299312848] [2022-11-16 20:06:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:53,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-16 20:07:00,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:00,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299312848] [2022-11-16 20:07:00,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299312848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:07:00,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461577053] [2022-11-16 20:07:00,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:07:00,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:00,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:07:00,885 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:07:00,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 20:07:01,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 20:07:01,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:07:01,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:07:01,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2022-11-16 20:07:01,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2022-11-16 20:07:01,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461577053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:07:01,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [710191230] [2022-11-16 20:07:01,443 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:07:01,444 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:07:01,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:07:01,444 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:07:01,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:07:01,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:01,471 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:07:01,472 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:01,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:01,498 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:07:01,498 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:01,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:01,529 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-11-16 20:07:01,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:01,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:01,588 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 20:07:01,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 20:07:01,628 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:07:01,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:01,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:07:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:01,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:07:01,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:07:01,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:01,803 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:07:01,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:07:01,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:07:01,849 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:01,952 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:07:01,978 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:07:10,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(and (exists ((v_mapsum_~ret~0_BEFORE_RETURN_47 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_47 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_47 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_47 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:07:10,267 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:07:10,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:07:10,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2022-11-16 20:07:10,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249623813] [2022-11-16 20:07:10,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:07:10,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-11-16 20:07:10,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:10,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-11-16 20:07:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2022-11-16 20:07:10,277 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:07:10,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:10,491 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2022-11-16 20:07:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-16 20:07:10,492 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2022-11-16 20:07:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:10,496 INFO L225 Difference]: With dead ends: 155 [2022-11-16 20:07:10,497 INFO L226 Difference]: Without dead ends: 130 [2022-11-16 20:07:10,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2022-11-16 20:07:10,501 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:10,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:07:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-16 20:07:10,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-16 20:07:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:07:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2022-11-16 20:07:10,522 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2022-11-16 20:07:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:10,522 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2022-11-16 20:07:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:07:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2022-11-16 20:07:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-16 20:07:10,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:10,528 INFO L195 NwaCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:10,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-16 20:07:10,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:10,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:10,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:10,731 INFO L85 PathProgramCache]: Analyzing trace with hash 109612682, now seen corresponding path program 9 times [2022-11-16 20:07:10,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:10,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814537424] [2022-11-16 20:07:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:10,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-16 20:07:17,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:17,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814537424] [2022-11-16 20:07:17,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814537424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:07:17,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565783070] [2022-11-16 20:07:17,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:07:17,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:17,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:07:17,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:07:17,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 20:07:17,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:07:17,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:07:17,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-16 20:07:17,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-16 20:07:18,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-16 20:07:22,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565783070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:07:22,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912932590] [2022-11-16 20:07:22,933 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:07:22,934 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:07:22,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:07:22,934 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:07:22,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:07:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:22,963 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:07:22,963 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:22,991 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:07:22,991 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:23,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:23,011 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-11-16 20:07:23,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:23,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:23,063 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 20:07:23,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 20:07:23,101 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:07:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:23,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:07:23,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:23,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:07:23,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:07:23,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:23,279 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:07:23,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:07:23,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:07:23,321 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:23,428 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:07:23,461 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:07:29,778 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7025#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_54 Int)) (= (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296))) |ULTIMATE.start_main_~ret5~0#1|)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:07:29,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:07:29,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:07:29,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2022-11-16 20:07:29,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576281132] [2022-11-16 20:07:29,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:07:29,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-11-16 20:07:29,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-11-16 20:07:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2022-11-16 20:07:29,783 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:07:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:29,972 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2022-11-16 20:07:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-16 20:07:29,973 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 155 [2022-11-16 20:07:29,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:29,974 INFO L225 Difference]: With dead ends: 160 [2022-11-16 20:07:29,974 INFO L226 Difference]: Without dead ends: 131 [2022-11-16 20:07:29,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 351 SyntacticMatches, 100 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6788 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2022-11-16 20:07:29,977 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:29,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:07:29,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-16 20:07:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-11-16 20:07:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:07:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2022-11-16 20:07:29,986 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2022-11-16 20:07:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:29,986 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2022-11-16 20:07:29,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:07:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2022-11-16 20:07:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 20:07:29,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:29,989 INFO L195 NwaCegarLoop]: trace histogram [100, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:29,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 20:07:30,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 20:07:30,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:30,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1176368610, now seen corresponding path program 10 times [2022-11-16 20:07:30,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:30,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522620615] [2022-11-16 20:07:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:30,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5584 trivial. 0 not checked. [2022-11-16 20:07:30,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:30,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522620615] [2022-11-16 20:07:30,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522620615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:07:30,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259220856] [2022-11-16 20:07:30,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:07:30,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:30,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:07:30,681 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:07:30,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 20:07:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:31,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 20:07:31,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-11-16 20:07:31,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-11-16 20:07:31,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259220856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:07:31,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [936356426] [2022-11-16 20:07:31,542 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:07:31,542 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:07:31,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:07:31,543 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:07:31,543 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:07:31,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:31,582 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:07:31,582 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:31,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:31,610 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:07:31,610 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:31,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:31,632 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:07:31,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:31,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:07:31,710 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:07:31,711 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:07:31,782 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:07:31,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:31,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:07:31,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:31,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:07:31,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:07:31,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:31,989 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:07:31,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:07:32,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:07:32,032 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:32,139 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:07:32,164 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:07:33,366 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8558#(and (exists ((v_mapsum_~ret~0_BEFORE_RETURN_60 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_60 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_60 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_60 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:07:33,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:07:33,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:07:33,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2022-11-16 20:07:33,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604762403] [2022-11-16 20:07:33,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:07:33,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 20:07:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:33,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 20:07:33,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 20:07:33,370 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:07:33,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:33,446 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2022-11-16 20:07:33,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 20:07:33,447 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 156 [2022-11-16 20:07:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:33,449 INFO L225 Difference]: With dead ends: 172 [2022-11-16 20:07:33,450 INFO L226 Difference]: Without dead ends: 144 [2022-11-16 20:07:33,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 20:07:33,451 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:33,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:07:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-16 20:07:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-11-16 20:07:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.0215827338129497) internal successors, (142), 139 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:07:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2022-11-16 20:07:33,463 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 156 [2022-11-16 20:07:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:33,465 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2022-11-16 20:07:33,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:07:33,465 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2022-11-16 20:07:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-16 20:07:33,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:33,468 INFO L195 NwaCegarLoop]: trace histogram [100, 66, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:33,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 20:07:33,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 20:07:33,676 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:33,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:33,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1248284586, now seen corresponding path program 11 times [2022-11-16 20:07:33,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:33,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500002519] [2022-11-16 20:07:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:33,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-11-16 20:07:34,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:34,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500002519] [2022-11-16 20:07:34,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500002519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:07:34,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125772551] [2022-11-16 20:07:34,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:07:34,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:34,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:07:34,314 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:07:34,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 20:07:34,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 20:07:34,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:07:34,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 20:07:34,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 1062 proven. 28 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2022-11-16 20:07:34,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-11-16 20:07:35,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125772551] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:07:35,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2136646264] [2022-11-16 20:07:35,096 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:07:35,097 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:07:35,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:07:35,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:07:35,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:07:35,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:35,139 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:07:35,140 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:35,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:35,150 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:35,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:35,166 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:07:35,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:35,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:07:35,234 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:07:35,234 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:07:35,302 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:07:35,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:35,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:07:35,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:35,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 20:07:35,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:35,484 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-16 20:07:35,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-16 20:07:35,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:07:35,544 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:35,641 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:07:35,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:07:38,726 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10351#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:07:38,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:07:38,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:07:38,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-11-16 20:07:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041175439] [2022-11-16 20:07:38,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:07:38,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 20:07:38,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:38,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 20:07:38,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2022-11-16 20:07:38,729 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 20:07:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:38,776 INFO L93 Difference]: Finished difference Result 183 states and 196 transitions. [2022-11-16 20:07:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 20:07:38,777 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 193 [2022-11-16 20:07:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:38,778 INFO L225 Difference]: With dead ends: 183 [2022-11-16 20:07:38,778 INFO L226 Difference]: Without dead ends: 153 [2022-11-16 20:07:38,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2022-11-16 20:07:38,779 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:38,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:07:38,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-16 20:07:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-11-16 20:07:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0202702702702702) internal successors, (151), 148 states have internal predecessors, (151), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:07:38,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2022-11-16 20:07:38,789 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 193 [2022-11-16 20:07:38,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:38,789 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2022-11-16 20:07:38,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 20:07:38,790 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2022-11-16 20:07:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 20:07:38,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:38,793 INFO L195 NwaCegarLoop]: trace histogram [100, 66, 16, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:38,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 20:07:39,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 20:07:39,000 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:39,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash -799783074, now seen corresponding path program 12 times [2022-11-16 20:07:39,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:39,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661837521] [2022-11-16 20:07:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:39,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-11-16 20:07:39,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:39,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661837521] [2022-11-16 20:07:39,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661837521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:07:39,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038676859] [2022-11-16 20:07:39,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:07:40,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:40,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:07:40,001 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:07:40,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 20:07:40,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:07:40,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:07:40,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 20:07:40,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1060 proven. 253 refuted. 0 times theorem prover too weak. 6225 trivial. 0 not checked. [2022-11-16 20:07:41,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 6225 trivial. 0 not checked. [2022-11-16 20:07:42,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038676859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:07:42,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253765717] [2022-11-16 20:07:42,014 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:07:42,014 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:07:42,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:07:42,015 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:07:42,015 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:07:42,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:42,051 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:07:42,052 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:42,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:42,062 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:42,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:42,079 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:07:42,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:42,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:07:42,146 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:07:42,146 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:07:42,206 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:07:42,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:42,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:07:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:42,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 20:07:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:42,383 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-11-16 20:07:42,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-11-16 20:07:42,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:07:42,440 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:42,561 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:07:42,588 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:07:50,000 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12286#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:07:50,001 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:07:50,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:07:50,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 25] total 65 [2022-11-16 20:07:50,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089302631] [2022-11-16 20:07:50,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:07:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-16 20:07:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:50,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-16 20:07:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1357, Invalid=4648, Unknown=1, NotChecked=0, Total=6006 [2022-11-16 20:07:50,004 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:07:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:50,145 INFO L93 Difference]: Finished difference Result 228 states and 262 transitions. [2022-11-16 20:07:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-16 20:07:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 202 [2022-11-16 20:07:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:50,148 INFO L225 Difference]: With dead ends: 228 [2022-11-16 20:07:50,148 INFO L226 Difference]: Without dead ends: 178 [2022-11-16 20:07:50,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1357, Invalid=4648, Unknown=1, NotChecked=0, Total=6006 [2022-11-16 20:07:50,149 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:50,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:07:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-16 20:07:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-16 20:07:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 173 states have internal predecessors, (176), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:07:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 182 transitions. [2022-11-16 20:07:50,161 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 182 transitions. Word has length 202 [2022-11-16 20:07:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:50,161 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 182 transitions. [2022-11-16 20:07:50,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:07:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 182 transitions. [2022-11-16 20:07:50,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-16 20:07:50,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:50,166 INFO L195 NwaCegarLoop]: trace histogram [138, 100, 17, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:50,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-16 20:07:50,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 20:07:50,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash 979099606, now seen corresponding path program 13 times [2022-11-16 20:07:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:50,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126515293] [2022-11-16 20:07:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:50,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 14926 trivial. 0 not checked. [2022-11-16 20:07:51,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:51,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126515293] [2022-11-16 20:07:51,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126515293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:07:51,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686242412] [2022-11-16 20:07:51,669 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:07:51,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:51,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:07:51,675 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:07:51,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 20:07:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:52,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 20:07:52,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 4420 proven. 1081 refuted. 0 times theorem prover too weak. 9578 trivial. 0 not checked. [2022-11-16 20:07:53,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 0 proven. 5501 refuted. 0 times theorem prover too weak. 9578 trivial. 0 not checked. [2022-11-16 20:07:57,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686242412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:07:57,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1719677038] [2022-11-16 20:07:57,380 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:07:57,380 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:07:57,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:07:57,381 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:07:57,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:07:57,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:57,408 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:07:57,408 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:57,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:57,417 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:57,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:57,437 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:07:57,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:57,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:07:57,495 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:07:57,495 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:07:57,561 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:07:57,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:57,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:07:57,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:57,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-16 20:07:57,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:07:57,750 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-11-16 20:07:57,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-11-16 20:07:57,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:07:57,825 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:07:57,925 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:07:57,949 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:08:03,748 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14846#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_77 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_77 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_77 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_77 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:08:03,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:08:03,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:08:03,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 49, 49] total 114 [2022-11-16 20:08:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393941585] [2022-11-16 20:08:03,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:08:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-11-16 20:08:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-11-16 20:08:03,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4809, Invalid=11193, Unknown=0, NotChecked=0, Total=16002 [2022-11-16 20:08:03,753 INFO L87 Difference]: Start difference. First operand 178 states and 182 transitions. Second operand has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:08:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:04,043 INFO L93 Difference]: Finished difference Result 302 states and 360 transitions. [2022-11-16 20:08:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-11-16 20:08:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 275 [2022-11-16 20:08:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:04,045 INFO L225 Difference]: With dead ends: 302 [2022-11-16 20:08:04,046 INFO L226 Difference]: Without dead ends: 227 [2022-11-16 20:08:04,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3661 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=4809, Invalid=11193, Unknown=0, NotChecked=0, Total=16002 [2022-11-16 20:08:04,048 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:04,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-16 20:08:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-16 20:08:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 222 states have internal predecessors, (225), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:08:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2022-11-16 20:08:04,061 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 275 [2022-11-16 20:08:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:04,062 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2022-11-16 20:08:04,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:08:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2022-11-16 20:08:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-11-16 20:08:04,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:04,070 INFO L195 NwaCegarLoop]: trace histogram [282, 100, 18, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:04,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 20:08:04,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 20:08:04,279 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:08:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1174598622, now seen corresponding path program 14 times [2022-11-16 20:08:04,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:04,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085823685] [2022-11-16 20:08:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:04,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-11-16 20:08:06,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:06,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085823685] [2022-11-16 20:08:06,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085823685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:08:06,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64811076] [2022-11-16 20:08:06,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:08:06,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:06,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:06,115 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:06,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 20:08:10,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 20:08:10,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:08:10,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 20:08:10,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 18054 proven. 171 refuted. 0 times theorem prover too weak. 27472 trivial. 0 not checked. [2022-11-16 20:08:10,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:08:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-11-16 20:08:11,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64811076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:08:11,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2061008464] [2022-11-16 20:08:11,357 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:08:11,358 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:08:11,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:08:11,358 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:08:11,359 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:08:11,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:11,387 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:08:11,388 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:11,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:11,412 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:08:11,413 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:11,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:11,430 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:08:11,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:11,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:08:11,508 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:08:11,508 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:08:11,571 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:08:11,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:11,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:08:11,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:11,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:08:11,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:08:11,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:11,775 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:08:11,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:08:11,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:08:11,824 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:11,921 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:08:11,949 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:08:17,182 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18449#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2022-11-16 20:08:17,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:08:17,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:08:17,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2022-11-16 20:08:17,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731599343] [2022-11-16 20:08:17,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:08:17,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 20:08:17,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:17,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 20:08:17,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=879, Invalid=1982, Unknown=1, NotChecked=0, Total=2862 [2022-11-16 20:08:17,185 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 20:08:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:17,289 INFO L93 Difference]: Finished difference Result 349 states and 373 transitions. [2022-11-16 20:08:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 20:08:17,290 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 420 [2022-11-16 20:08:17,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:17,292 INFO L225 Difference]: With dead ends: 349 [2022-11-16 20:08:17,292 INFO L226 Difference]: Without dead ends: 247 [2022-11-16 20:08:17,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1227 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=879, Invalid=1982, Unknown=1, NotChecked=0, Total=2862 [2022-11-16 20:08:17,293 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:17,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:08:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-16 20:08:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-11-16 20:08:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.012396694214876) internal successors, (245), 242 states have internal predecessors, (245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:08:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 251 transitions. [2022-11-16 20:08:17,308 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 251 transitions. Word has length 420 [2022-11-16 20:08:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:17,309 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 251 transitions. [2022-11-16 20:08:17,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 20:08:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 251 transitions. [2022-11-16 20:08:17,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-16 20:08:17,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:17,313 INFO L195 NwaCegarLoop]: trace histogram [282, 100, 38, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:17,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 20:08:17,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 20:08:17,524 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:08:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash 161786334, now seen corresponding path program 15 times [2022-11-16 20:08:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:17,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405778801] [2022-11-16 20:08:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:17,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-11-16 20:08:20,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:20,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405778801] [2022-11-16 20:08:20,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405778801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:08:20,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550899470] [2022-11-16 20:08:20,589 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:08:20,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:20,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:20,591 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:20,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 20:08:21,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:08:21,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:08:21,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 20:08:21,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 18052 proven. 4465 refuted. 0 times theorem prover too weak. 23750 trivial. 0 not checked. [2022-11-16 20:08:27,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:08:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 0 proven. 22517 refuted. 0 times theorem prover too weak. 23750 trivial. 0 not checked. [2022-11-16 20:08:33,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550899470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:08:33,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693635813] [2022-11-16 20:08:33,895 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:08:33,896 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:08:33,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:08:33,896 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:08:33,896 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:08:33,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:33,920 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:08:33,920 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:33,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:33,942 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:08:33,942 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:33,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:33,959 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-11-16 20:08:33,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:33,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:08:34,013 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-16 20:08:34,013 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 185 [2022-11-16 20:08:34,116 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:08:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:34,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:08:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:34,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:08:34,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:08:34,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:34,326 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:08:34,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:08:34,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:08:34,380 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:34,493 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:08:34,519 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:08:37,278 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22408#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_90 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_90 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_90 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_90 4294967296) (- 4294967296))))) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:08:37,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:08:37,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:08:37,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 97, 97] total 141 [2022-11-16 20:08:37,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819775697] [2022-11-16 20:08:37,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:08:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-11-16 20:08:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-11-16 20:08:37,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6030, Invalid=17532, Unknown=0, NotChecked=0, Total=23562 [2022-11-16 20:08:37,282 INFO L87 Difference]: Start difference. First operand 247 states and 251 transitions. Second operand has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:08:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:37,626 INFO L93 Difference]: Finished difference Result 398 states and 414 transitions. [2022-11-16 20:08:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-11-16 20:08:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 440 [2022-11-16 20:08:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:37,629 INFO L225 Difference]: With dead ends: 398 [2022-11-16 20:08:37,629 INFO L226 Difference]: Without dead ends: 254 [2022-11-16 20:08:37,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 1117 SyntacticMatches, 90 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13543 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=6030, Invalid=17532, Unknown=0, NotChecked=0, Total=23562 [2022-11-16 20:08:37,632 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:37,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:08:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-16 20:08:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-11-16 20:08:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.0120481927710843) internal successors, (252), 249 states have internal predecessors, (252), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:08:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 258 transitions. [2022-11-16 20:08:37,648 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 258 transitions. Word has length 440 [2022-11-16 20:08:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:37,649 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 258 transitions. [2022-11-16 20:08:37,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:08:37,649 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 258 transitions. [2022-11-16 20:08:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-11-16 20:08:37,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:37,653 INFO L195 NwaCegarLoop]: trace histogram [300, 100, 39, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:37,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 20:08:37,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 20:08:37,863 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:08:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:37,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1394540150, now seen corresponding path program 16 times [2022-11-16 20:08:37,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:37,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031950176] [2022-11-16 20:08:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:37,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-11-16 20:08:40,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:40,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031950176] [2022-11-16 20:08:40,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031950176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:08:40,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273752149] [2022-11-16 20:08:40,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:08:40,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:40,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:40,809 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:40,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 20:08:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:41,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 20:08:41,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:08:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 20406 proven. 780 refuted. 0 times theorem prover too weak. 30403 trivial. 0 not checked. [2022-11-16 20:08:41,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:08:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-11-16 20:08:44,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273752149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:08:44,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778830631] [2022-11-16 20:08:44,078 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 20:08:44,078 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:08:44,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:08:44,079 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:08:44,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:08:44,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:44,107 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 20:08:44,108 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:44,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:44,118 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:44,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:44,134 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 33 [2022-11-16 20:08:44,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:44,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:44,194 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-16 20:08:44,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2022-11-16 20:08:44,230 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2022-11-16 20:08:44,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:44,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-16 20:08:44,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:44,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:08:44,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-16 20:08:44,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:08:44,396 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-16 20:08:44,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-16 20:08:44,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 20:08:44,439 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 20:08:44,534 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-11-16 20:08:44,565 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:08:46,063 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26533#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_96 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_96 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_96 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_96 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-11-16 20:08:46,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:08:46,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:08:46,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 83 [2022-11-16 20:08:46,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440510345] [2022-11-16 20:08:46,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:08:46,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-16 20:08:46,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:08:46,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-16 20:08:46,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3463, Invalid=5657, Unknown=0, NotChecked=0, Total=9120 [2022-11-16 20:08:46,067 INFO L87 Difference]: Start difference. First operand 254 states and 258 transitions. Second operand has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 20:08:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:08:46,246 INFO L93 Difference]: Finished difference Result 403 states and 448 transitions. [2022-11-16 20:08:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-16 20:08:46,255 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 459 [2022-11-16 20:08:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:08:46,259 INFO L225 Difference]: With dead ends: 403 [2022-11-16 20:08:46,259 INFO L226 Difference]: Without dead ends: 295 [2022-11-16 20:08:46,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1417 GetRequests, 1323 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3463, Invalid=5657, Unknown=0, NotChecked=0, Total=9120 [2022-11-16 20:08:46,262 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:08:46,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:08:46,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-16 20:08:46,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-11-16 20:08:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 290 states have (on average 1.0103448275862068) internal successors, (293), 290 states have internal predecessors, (293), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 20:08:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 299 transitions. [2022-11-16 20:08:46,282 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 299 transitions. Word has length 459 [2022-11-16 20:08:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:08:46,283 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 299 transitions. [2022-11-16 20:08:46,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 20:08:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 299 transitions. [2022-11-16 20:08:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-16 20:08:46,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:08:46,287 INFO L195 NwaCegarLoop]: trace histogram [300, 100, 80, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:08:46,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 20:08:46,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:46,498 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:08:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:08:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash -84694530, now seen corresponding path program 17 times [2022-11-16 20:08:46,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:08:46,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274899475] [2022-11-16 20:08:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:08:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:08:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:08:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 54049 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-11-16 20:08:54,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:08:54,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274899475] [2022-11-16 20:08:54,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274899475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:08:54,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984936126] [2022-11-16 20:08:54,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:08:54,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:08:54,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:54,018 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:08:54,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dbf119-64e9-4059-8336-802700cd1832/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process