./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh --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 a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf --- 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-2329fc7 [2022-12-14 13:15:25,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:15:25,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:15:25,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:15:25,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:15:25,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:15:25,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:15:25,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:15:25,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:15:25,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:15:25,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:15:25,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:15:25,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:15:25,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:15:25,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:15:25,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:15:25,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:15:25,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:15:25,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:15:25,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:15:25,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:15:25,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:15:25,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:15:25,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:15:25,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:15:25,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:15:25,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:15:25,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:15:25,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:15:25,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:15:25,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:15:25,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:15:25,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:15:25,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:15:25,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:15:25,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:15:25,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:15:25,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:15:25,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:15:25,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:15:25,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:15:25,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:15:25,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:15:25,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:15:25,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:15:25,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:15:25,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:15:25,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:15:25,612 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:15:25,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:15:25,612 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:15:25,612 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:15:25,613 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:15:25,613 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:15:25,613 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:15:25,613 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:15:25,613 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:15:25,614 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:15:25,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:15:25,614 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:15:25,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:15:25,615 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:15:25,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:15:25,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:15:25,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:15:25,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:15:25,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:15:25,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:15:25,616 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:15:25,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:15:25,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:15:25,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:15:25,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:15:25,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:15:25,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:15:25,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:15:25,618 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:15:25,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:15:25,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:15:25,618 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:15:25,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:15:25,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:15:25,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:15:25,619 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_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf [2022-12-14 13:15:25,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:15:25,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:15:25,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:15:25,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:15:25,838 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:15:25,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/reducercommutativity/rangesum40.i [2022-12-14 13:15:28,517 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:15:28,646 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:15:28,646 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/sv-benchmarks/c/reducercommutativity/rangesum40.i [2022-12-14 13:15:28,650 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/data/1fa7afc94/0e29bf95de9d46d088ff8e655cbb29f5/FLAGd526e6d04 [2022-12-14 13:15:28,660 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/data/1fa7afc94/0e29bf95de9d46d088ff8e655cbb29f5 [2022-12-14 13:15:28,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:15:28,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:15:28,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:15:28,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:15:28,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:15:28,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4165b80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28, skipping insertion in model container [2022-12-14 13:15:28,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:15:28,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:15:28,796 WARN L237 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_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2022-12-14 13:15:28,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:15:28,808 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:15:28,825 WARN L237 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_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2022-12-14 13:15:28,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:15:28,837 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:15:28,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28 WrapperNode [2022-12-14 13:15:28,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:15:28,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:15:28,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:15:28,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:15:28,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,863 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-12-14 13:15:28,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:15:28,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:15:28,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:15:28,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:15:28,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,881 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:15:28,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:15:28,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:15:28,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:15:28,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (1/1) ... [2022-12-14 13:15:28,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:15:28,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:28,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:15:28,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:15:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:15:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:15:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:15:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:15:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:15:28,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:15:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:15:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2022-12-14 13:15:28,936 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2022-12-14 13:15:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:15:28,996 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:15:28,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:15:29,110 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:15:29,154 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:15:29,154 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 13:15:29,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:15:29 BoogieIcfgContainer [2022-12-14 13:15:29,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:15:29,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:15:29,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:15:29,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:15:29,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:15:28" (1/3) ... [2022-12-14 13:15:29,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d5f85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:15:29, skipping insertion in model container [2022-12-14 13:15:29,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:28" (2/3) ... [2022-12-14 13:15:29,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d5f85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:15:29, skipping insertion in model container [2022-12-14 13:15:29,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:15:29" (3/3) ... [2022-12-14 13:15:29,162 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2022-12-14 13:15:29,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:15:29,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:15:29,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:15:29,219 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;@1828b91b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:15:29,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:15:29,222 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) [2022-12-14 13:15:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 13:15:29,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:29,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:29,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash -362891911, now seen corresponding path program 1 times [2022-12-14 13:15:29,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:29,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805448629] [2022-12-14 13:15:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:29,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:29,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:29,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805448629] [2022-12-14 13:15:29,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 13:15:29,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030323972] [2022-12-14 13:15:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:29,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:29,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:29,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:29,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:15:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:29,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:15:29,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 13:15:29,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:15:29,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030323972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:15:29,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:15:29,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:15:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843485957] [2022-12-14 13:15:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:15:29,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:15:29,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:15:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:15:29,513 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), 2 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) [2022-12-14 13:15:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:29,558 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-12-14 13:15:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:15:29,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 [2022-12-14 13:15:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:29,568 INFO L225 Difference]: With dead ends: 33 [2022-12-14 13:15:29,568 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 13:15:29,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:15:29,574 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 [2022-12-14 13:15:29,575 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] [2022-12-14 13:15:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 13:15:29,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 13:15:29,602 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) [2022-12-14 13:15:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-12-14 13:15:29,604 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-12-14 13:15:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:29,604 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-12-14 13:15:29,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2022-12-14 13:15:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-12-14 13:15:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 13:15:29,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:29,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:29,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:15:29,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 13:15:29,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:29,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1234920756, now seen corresponding path program 1 times [2022-12-14 13:15:29,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:29,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585250022] [2022-12-14 13:15:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:29,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:29,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:29,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585250022] [2022-12-14 13:15:29,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 13:15:29,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621133755] [2022-12-14 13:15:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:29,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:29,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:29,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:29,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:15:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:30,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:15:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:15:30,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:15:30,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621133755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:15:30,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:15:30,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:15:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518461656] [2022-12-14 13:15:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:15:30,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:15:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:15:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:15:30,021 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) [2022-12-14 13:15:30,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:30,040 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-12-14 13:15:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:15:30,040 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 [2022-12-14 13:15:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:30,041 INFO L225 Difference]: With dead ends: 29 [2022-12-14 13:15:30,041 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 13:15:30,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:15:30,042 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 [2022-12-14 13:15:30,043 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] [2022-12-14 13:15:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 13:15:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 13:15:30,045 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) [2022-12-14 13:15:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-12-14 13:15:30,046 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-12-14 13:15:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:30,046 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-12-14 13:15:30,046 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) [2022-12-14 13:15:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-12-14 13:15:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 13:15:30,047 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:30,047 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:30,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:15:30,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:30,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:30,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:30,251 INFO L85 PathProgramCache]: Analyzing trace with hash -877476800, now seen corresponding path program 1 times [2022-12-14 13:15:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:30,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3609492] [2022-12-14 13:15:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:30,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3609492] [2022-12-14 13:15:30,345 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 13:15:30,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108104761] [2022-12-14 13:15:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:30,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:30,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:30,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:30,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:15:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:30,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:15:30,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:15:30,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:15:30,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108104761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:15:30,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:15:30,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:15:30,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455127580] [2022-12-14 13:15:30,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:15:30,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:15:30,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:30,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:15:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:15:30,471 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) [2022-12-14 13:15:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:30,489 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-12-14 13:15:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:15:30,489 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 [2022-12-14 13:15:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:30,490 INFO L225 Difference]: With dead ends: 27 [2022-12-14 13:15:30,490 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 13:15:30,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:15:30,491 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 [2022-12-14 13:15:30,491 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] [2022-12-14 13:15:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 13:15:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 13:15:30,493 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) [2022-12-14 13:15:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-14 13:15:30,494 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-12-14 13:15:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:30,495 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-14 13:15:30,495 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) [2022-12-14 13:15:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-12-14 13:15:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 13:15:30,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:30,496 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:30,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:15:30,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:30,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash 140313158, now seen corresponding path program 1 times [2022-12-14 13:15:30,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:30,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177377475] [2022-12-14 13:15:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:30,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:30,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:30,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177377475] [2022-12-14 13:15:30,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 13:15:30,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059954137] [2022-12-14 13:15:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:30,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:30,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:30,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:30,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:15:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:30,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:15:30,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 13:15:30,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 13:15:30,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059954137] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:30,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034491351] [2022-12-14 13:15:30,954 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:30,954 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:30,957 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:30,961 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:30,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:31,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:31,031 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:15:31,031 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 [2022-12-14 13:15:31,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:31,058 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:31,058 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 [2022-12-14 13:15:31,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:31,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:31,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:31,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:31,181 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 13:15:31,182 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 220 treesize of output 208 [2022-12-14 13:15:31,246 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 [2022-12-14 13:15:31,416 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 [2022-12-14 13:15:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:31,527 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 [2022-12-14 13:15:31,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:31,579 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 13:15:31,579 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 [2022-12-14 13:15:31,640 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 [2022-12-14 13:15:31,653 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 [2022-12-14 13:15:31,747 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:31,866 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:32,462 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '576#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:32,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:32,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:32,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2022-12-14 13:15:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660604012] [2022-12-14 13:15:32,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:32,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:15:32,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:32,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:15:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-14 13:15:32,465 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-12-14 13:15:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:32,492 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-12-14 13:15:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:15:32,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 [2022-12-14 13:15:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:32,493 INFO L225 Difference]: With dead ends: 36 [2022-12-14 13:15:32,493 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 13:15:32,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-14 13:15:32,494 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:32,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 13:15:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 13:15:32,498 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) [2022-12-14 13:15:32,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-12-14 13:15:32,498 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-12-14 13:15:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:32,498 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-12-14 13:15:32,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-12-14 13:15:32,499 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-12-14 13:15:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 13:15:32,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:32,499 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:32,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:15:32,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:32,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:32,701 INFO L85 PathProgramCache]: Analyzing trace with hash 139189043, now seen corresponding path program 2 times [2022-12-14 13:15:32,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:32,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199548512] [2022-12-14 13:15:32,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:32,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:32,721 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:32,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968978861] [2022-12-14 13:15:32,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:15:32,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:32,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:32,722 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:32,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:15:32,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 13:15:32,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:32,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:15:32,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 13:15:32,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 13:15:32,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:32,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199548512] [2022-12-14 13:15:32,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:32,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968978861] [2022-12-14 13:15:32,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968978861] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:32,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [701914149] [2022-12-14 13:15:32,810 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:32,810 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:32,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:32,811 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:32,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:32,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:32,839 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:32,839 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 [2022-12-14 13:15:32,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:32,848 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 [2022-12-14 13:15:32,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:32,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:32,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:32,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:32,925 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 13:15:32,925 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 210 treesize of output 209 [2022-12-14 13:15:33,009 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 [2022-12-14 13:15:33,103 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 [2022-12-14 13:15:33,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:33,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:33,192 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 [2022-12-14 13:15:33,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:33,223 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 13:15:33,223 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 [2022-12-14 13:15:33,247 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 [2022-12-14 13:15:33,258 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 [2022-12-14 13:15:33,324 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:33,457 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:33,985 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '847#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:33,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:33,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:33,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-14 13:15:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584102699] [2022-12-14 13:15:33,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:33,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:15:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:15:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-14 13:15:33,987 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:15:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:34,007 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-12-14 13:15:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:15:34,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-12-14 13:15:34,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:34,008 INFO L225 Difference]: With dead ends: 38 [2022-12-14 13:15:34,008 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 13:15:34,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-14 13:15:34,009 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:34,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:34,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 13:15:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 13:15:34,013 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) [2022-12-14 13:15:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-12-14 13:15:34,013 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-12-14 13:15:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:34,014 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-12-14 13:15:34,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 13:15:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-14 13:15:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 13:15:34,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:34,015 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:34,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:15:34,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:34,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash 378555129, now seen corresponding path program 3 times [2022-12-14 13:15:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:34,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584909494] [2022-12-14 13:15:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:34,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:34,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:34,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643689334] [2022-12-14 13:15:34,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:15:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:34,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:34,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:34,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:15:34,312 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:15:34,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:34,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:15:34,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 13:15:34,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 13:15:34,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:34,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584909494] [2022-12-14 13:15:34,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:34,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643689334] [2022-12-14 13:15:34,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643689334] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:34,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171860007] [2022-12-14 13:15:34,380 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:34,380 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:34,380 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:34,380 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:34,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:34,400 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:34,400 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 [2022-12-14 13:15:34,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:34,407 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 [2022-12-14 13:15:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:34,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:34,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:34,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:34,462 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 13:15:34,463 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 220 treesize of output 208 [2022-12-14 13:15:34,496 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 [2022-12-14 13:15:34,604 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 [2022-12-14 13:15:34,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:34,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:34,677 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 32 treesize of output 27 [2022-12-14 13:15:34,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:34,711 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 13:15:34,711 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 [2022-12-14 13:15:34,729 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 [2022-12-14 13:15:34,738 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 [2022-12-14 13:15:34,827 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:34,915 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:35,375 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1188#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:35,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:35,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:35,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2022-12-14 13:15:35,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586838761] [2022-12-14 13:15:35,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:35,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 13:15:35,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:35,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 13:15:35,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-12-14 13:15:35,377 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2022-12-14 13:15:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:35,397 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-12-14 13:15:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:15:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 37 [2022-12-14 13:15:35,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:35,397 INFO L225 Difference]: With dead ends: 48 [2022-12-14 13:15:35,398 INFO L226 Difference]: Without dead ends: 30 [2022-12-14 13:15:35,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-12-14 13:15:35,399 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:35,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-14 13:15:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-14 13:15:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-12-14 13:15:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-12-14 13:15:35,403 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 37 [2022-12-14 13:15:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:35,404 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-12-14 13:15:35,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2022-12-14 13:15:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-12-14 13:15:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 13:15:35,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:35,405 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:35,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:15:35,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 13:15:35,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1272494041, now seen corresponding path program 4 times [2022-12-14 13:15:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:35,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522438227] [2022-12-14 13:15:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:35,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:35,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122969149] [2022-12-14 13:15:35,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:15:35,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:35,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:35,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:35,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:15:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:35,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:15:35,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 13:15:35,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 13:15:35,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:35,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522438227] [2022-12-14 13:15:35,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:35,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122969149] [2022-12-14 13:15:35,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122969149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:35,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976819390] [2022-12-14 13:15:35,900 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:35,900 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:35,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:35,900 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:35,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:35,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:35,919 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:35,919 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 [2022-12-14 13:15:35,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:35,926 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 [2022-12-14 13:15:35,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:35,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:35,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:35,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:35,998 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 13:15:35,998 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 210 treesize of output 209 [2022-12-14 13:15:36,070 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 [2022-12-14 13:15:36,171 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 [2022-12-14 13:15:36,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:36,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:36,232 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 [2022-12-14 13:15:36,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:36,262 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 13:15:36,262 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 [2022-12-14 13:15:36,291 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 [2022-12-14 13:15:36,302 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 13 treesize of output 9 [2022-12-14 13:15:36,364 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:36,451 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:37,084 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1609#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:37,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:37,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:37,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2022-12-14 13:15:37,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088739933] [2022-12-14 13:15:37,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:37,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 13:15:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 13:15:37,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 13:15:37,086 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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) [2022-12-14 13:15:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:37,120 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2022-12-14 13:15:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 13:15:37,120 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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 43 [2022-12-14 13:15:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:37,120 INFO L225 Difference]: With dead ends: 60 [2022-12-14 13:15:37,121 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 13:15:37,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 13:15:37,121 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:37,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 13:15:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-12-14 13:15:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 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) [2022-12-14 13:15:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-12-14 13:15:37,125 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 43 [2022-12-14 13:15:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:37,125 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-12-14 13:15:37,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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) [2022-12-14 13:15:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-12-14 13:15:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 13:15:37,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:37,126 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:37,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 13:15:37,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:37,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1480595865, now seen corresponding path program 5 times [2022-12-14 13:15:37,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:37,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399278582] [2022-12-14 13:15:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:37,395 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:37,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522626165] [2022-12-14 13:15:37,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:15:37,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:37,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:37,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:37,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 13:15:37,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 13:15:37,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:37,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:15:37,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-12-14 13:15:37,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-14 13:15:37,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:37,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399278582] [2022-12-14 13:15:37,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:37,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522626165] [2022-12-14 13:15:37,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522626165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:37,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1549134853] [2022-12-14 13:15:37,489 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:37,489 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:37,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:37,490 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:37,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:37,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:37,508 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:15:37,508 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 [2022-12-14 13:15:37,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:37,524 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:37,524 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 [2022-12-14 13:15:37,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:37,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:37,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:37,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:37,590 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 13:15:37,591 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 220 treesize of output 208 [2022-12-14 13:15:37,629 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 [2022-12-14 13:15:37,713 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 [2022-12-14 13:15:37,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:37,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:37,780 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 [2022-12-14 13:15:37,797 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 [2022-12-14 13:15:37,808 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 [2022-12-14 13:15:37,870 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:37,969 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:38,469 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2132#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:38,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:38,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:38,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-14 13:15:38,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070436939] [2022-12-14 13:15:38,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:38,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:15:38,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:38,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:15:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-14 13:15:38,471 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-12-14 13:15:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:38,492 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-12-14 13:15:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:15:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 55 [2022-12-14 13:15:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:38,493 INFO L225 Difference]: With dead ends: 57 [2022-12-14 13:15:38,494 INFO L226 Difference]: Without dead ends: 45 [2022-12-14 13:15:38,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-12-14 13:15:38,495 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:38,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-14 13:15:38,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-12-14 13:15:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 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) [2022-12-14 13:15:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-12-14 13:15:38,500 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 55 [2022-12-14 13:15:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:38,500 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-12-14 13:15:38,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-12-14 13:15:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-12-14 13:15:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 13:15:38,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:38,501 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:38,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 13:15:38,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:38,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash -496280295, now seen corresponding path program 6 times [2022-12-14 13:15:38,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:38,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022533573] [2022-12-14 13:15:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:38,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:38,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:38,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083770155] [2022-12-14 13:15:38,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:15:38,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:38,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:38,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:38,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 13:15:38,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:15:38,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:38,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 13:15:38,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-14 13:15:39,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-14 13:15:39,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:39,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022533573] [2022-12-14 13:15:39,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:39,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083770155] [2022-12-14 13:15:39,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083770155] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:39,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [731902803] [2022-12-14 13:15:39,347 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:39,347 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:39,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:39,348 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:39,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:39,363 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:15:39,363 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 [2022-12-14 13:15:39,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:39,380 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:39,380 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 [2022-12-14 13:15:39,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:39,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:39,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:39,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:39,441 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 13:15:39,442 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 210 treesize of output 209 [2022-12-14 13:15:39,494 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 [2022-12-14 13:15:39,590 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 [2022-12-14 13:15:39,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:39,664 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 [2022-12-14 13:15:39,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:39,704 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-12-14 13:15:39,704 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 [2022-12-14 13:15:39,742 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 [2022-12-14 13:15:39,751 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 [2022-12-14 13:15:39,814 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:39,919 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:40,460 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2711#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:40,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:40,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:40,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 42 [2022-12-14 13:15:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106149177] [2022-12-14 13:15:40,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 13:15:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 13:15:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 13:15:40,462 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 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) [2022-12-14 13:15:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:40,520 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2022-12-14 13:15:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 13:15:40,521 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 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 58 [2022-12-14 13:15:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:40,522 INFO L225 Difference]: With dead ends: 84 [2022-12-14 13:15:40,522 INFO L226 Difference]: Without dead ends: 63 [2022-12-14 13:15:40,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 113 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 13:15:40,524 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:40,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-14 13:15:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-14 13:15:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 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) [2022-12-14 13:15:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-12-14 13:15:40,530 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 58 [2022-12-14 13:15:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:40,531 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-12-14 13:15:40,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 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) [2022-12-14 13:15:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-12-14 13:15:40,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 13:15:40,532 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:40,532 INFO L195 NwaCegarLoop]: trace histogram [40, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:40,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 13:15:40,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:40,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2082672007, now seen corresponding path program 7 times [2022-12-14 13:15:40,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:40,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848154223] [2022-12-14 13:15:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:40,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:40,816 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:40,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796657920] [2022-12-14 13:15:40,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:15:40,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:40,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:40,817 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:40,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 13:15:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:40,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:15:40,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2022-12-14 13:15:40,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2022-12-14 13:15:40,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:40,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848154223] [2022-12-14 13:15:40,987 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:40,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796657920] [2022-12-14 13:15:40,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796657920] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:40,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1842567617] [2022-12-14 13:15:40,989 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:40,989 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:40,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:40,989 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:40,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:40,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:41,006 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:41,006 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 [2022-12-14 13:15:41,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:41,012 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 [2022-12-14 13:15:41,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:41,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:41,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:41,078 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 13:15:41,079 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 210 treesize of output 209 [2022-12-14 13:15:41,136 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 [2022-12-14 13:15:41,226 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 [2022-12-14 13:15:41,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:41,301 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 [2022-12-14 13:15:41,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:41,338 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 13:15:41,339 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 [2022-12-14 13:15:41,369 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 [2022-12-14 13:15:41,378 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 [2022-12-14 13:15:41,433 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:41,520 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:41,952 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3456#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:41,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:41,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:41,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-14 13:15:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363261697] [2022-12-14 13:15:41,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:41,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 13:15:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 13:15:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-12-14 13:15:41,954 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 13:15:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:41,974 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2022-12-14 13:15:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:15:41,974 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2022-12-14 13:15:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:41,975 INFO L225 Difference]: With dead ends: 89 [2022-12-14 13:15:41,976 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 13:15:41,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-12-14 13:15:41,977 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:41,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 13:15:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-14 13:15:41,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 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) [2022-12-14 13:15:41,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-12-14 13:15:41,983 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 76 [2022-12-14 13:15:41,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:41,984 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-12-14 13:15:41,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 13:15:41,984 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-12-14 13:15:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 13:15:41,984 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:41,984 INFO L195 NwaCegarLoop]: trace histogram [40, 30, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:41,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 13:15:42,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 13:15:42,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash 803884729, now seen corresponding path program 8 times [2022-12-14 13:15:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:42,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019797320] [2022-12-14 13:15:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:42,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:42,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:42,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357340020] [2022-12-14 13:15:42,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:15:42,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:42,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:42,281 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:42,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 13:15:42,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 13:15:42,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:42,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:15:42,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 246 proven. 10 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2022-12-14 13:15:42,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2022-12-14 13:15:42,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:42,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019797320] [2022-12-14 13:15:42,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:42,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357340020] [2022-12-14 13:15:42,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357340020] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:42,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [491777687] [2022-12-14 13:15:42,479 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:42,479 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:42,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:42,480 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:42,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:42,497 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:15:42,497 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 [2022-12-14 13:15:42,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:42,514 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:42,515 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 [2022-12-14 13:15:42,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:42,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:42,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:42,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:42,574 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 13:15:42,575 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 220 treesize of output 208 [2022-12-14 13:15:42,616 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 [2022-12-14 13:15:42,711 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 [2022-12-14 13:15:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:42,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:42,788 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 [2022-12-14 13:15:42,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:42,827 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 13:15:42,827 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 [2022-12-14 13:15:42,846 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 [2022-12-14 13:15:42,856 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 [2022-12-14 13:15:42,930 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:43,025 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:43,606 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4331#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:43,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:43,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:43,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-14 13:15:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457294639] [2022-12-14 13:15:43,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:43,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 13:15:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 13:15:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-12-14 13:15:43,608 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2022-12-14 13:15:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:43,634 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2022-12-14 13:15:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:15:43,634 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 94 [2022-12-14 13:15:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:43,635 INFO L225 Difference]: With dead ends: 93 [2022-12-14 13:15:43,635 INFO L226 Difference]: Without dead ends: 75 [2022-12-14 13:15:43,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-12-14 13:15:43,637 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:43,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-14 13:15:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-12-14 13:15:43,641 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) [2022-12-14 13:15:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-12-14 13:15:43,641 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 94 [2022-12-14 13:15:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:43,642 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-12-14 13:15:43,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2022-12-14 13:15:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-12-14 13:15:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 13:15:43,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:43,643 INFO L195 NwaCegarLoop]: trace histogram [40, 30, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:43,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 13:15:43,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:43,844 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:43,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1435735737, now seen corresponding path program 9 times [2022-12-14 13:15:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:43,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161846287] [2022-12-14 13:15:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:43,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:43,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905432960] [2022-12-14 13:15:43,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:15:43,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:43,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:43,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:43,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 13:15:44,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:15:44,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:44,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:15:44,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2022-12-14 13:15:44,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2022-12-14 13:15:44,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:44,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161846287] [2022-12-14 13:15:44,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:44,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905432960] [2022-12-14 13:15:44,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905432960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:44,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1514130405] [2022-12-14 13:15:44,272 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:44,272 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:44,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:44,272 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:44,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:44,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:44,292 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:15:44,293 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 [2022-12-14 13:15:44,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:44,310 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:44,311 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 [2022-12-14 13:15:44,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:44,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:44,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:44,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:44,374 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 13:15:44,374 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 210 treesize of output 209 [2022-12-14 13:15:44,432 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 [2022-12-14 13:15:44,530 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 [2022-12-14 13:15:44,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:44,605 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 [2022-12-14 13:15:44,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:44,646 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-12-14 13:15:44,646 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 [2022-12-14 13:15:44,686 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 [2022-12-14 13:15:44,698 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 [2022-12-14 13:15:44,765 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:44,873 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:45,410 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5276#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:45,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:45,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:45,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-14 13:15:45,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120345908] [2022-12-14 13:15:45,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:45,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 13:15:45,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:45,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 13:15:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 13:15:45,412 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 13:15:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:45,442 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2022-12-14 13:15:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 13:15:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2022-12-14 13:15:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:45,444 INFO L225 Difference]: With dead ends: 119 [2022-12-14 13:15:45,444 INFO L226 Difference]: Without dead ends: 87 [2022-12-14 13:15:45,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 13:15:45,445 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:45,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-14 13:15:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-12-14 13:15:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 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) [2022-12-14 13:15:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-12-14 13:15:45,450 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 100 [2022-12-14 13:15:45,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:45,450 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-12-14 13:15:45,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 13:15:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-12-14 13:15:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-14 13:15:45,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:45,451 INFO L195 NwaCegarLoop]: trace histogram [66, 40, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:45,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 13:15:45,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 13:15:45,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:45,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1634853063, now seen corresponding path program 10 times [2022-12-14 13:15:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:45,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881503942] [2022-12-14 13:15:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:45,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:45,736 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:45,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060077374] [2022-12-14 13:15:45,736 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:15:45,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:45,737 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:45,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 13:15:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:15:45,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 13:15:45,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3227 backedges. 1060 proven. 253 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2022-12-14 13:15:46,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3227 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2022-12-14 13:15:46,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:46,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881503942] [2022-12-14 13:15:46,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:46,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060077374] [2022-12-14 13:15:46,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060077374] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:46,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734977781] [2022-12-14 13:15:46,551 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:46,551 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:46,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:46,551 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:46,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:46,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:46,573 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:46,573 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 [2022-12-14 13:15:46,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:46,581 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 [2022-12-14 13:15:46,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:46,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:46,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:46,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:46,651 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 13:15:46,652 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 210 treesize of output 209 [2022-12-14 13:15:46,715 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 [2022-12-14 13:15:46,802 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 [2022-12-14 13:15:46,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:46,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:46,877 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 [2022-12-14 13:15:46,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:46,911 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 13:15:46,912 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 [2022-12-14 13:15:46,932 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 [2022-12-14 13:15:46,945 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 [2022-12-14 13:15:47,021 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:47,122 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:47,940 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6529#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:47,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:47,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:47,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 42 [2022-12-14 13:15:47,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917390837] [2022-12-14 13:15:47,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:47,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 13:15:47,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:47,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 13:15:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 13:15:47,944 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 13:15:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:47,999 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions. [2022-12-14 13:15:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 13:15:48,000 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 136 [2022-12-14 13:15:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:48,001 INFO L225 Difference]: With dead ends: 149 [2022-12-14 13:15:48,001 INFO L226 Difference]: Without dead ends: 105 [2022-12-14 13:15:48,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 347 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 13:15:48,003 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:48,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-14 13:15:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-12-14 13:15:48,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 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) [2022-12-14 13:15:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-12-14 13:15:48,008 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 136 [2022-12-14 13:15:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:48,008 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-12-14 13:15:48,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 13:15:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-12-14 13:15:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-12-14 13:15:48,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:48,009 INFO L195 NwaCegarLoop]: trace histogram [120, 40, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:48,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 13:15:48,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 13:15:48,211 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:48,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2141770745, now seen corresponding path program 11 times [2022-12-14 13:15:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:48,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645930131] [2022-12-14 13:15:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:48,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:48,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926376125] [2022-12-14 13:15:48,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:15:48,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:48,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:48,302 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:48,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 13:15:49,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 13:15:49,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:49,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:15:49,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 3366 proven. 55 refuted. 0 times theorem prover too weak. 4963 trivial. 0 not checked. [2022-12-14 13:15:49,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2022-12-14 13:15:49,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645930131] [2022-12-14 13:15:49,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926376125] [2022-12-14 13:15:49,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926376125] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [631124867] [2022-12-14 13:15:49,460 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:49,460 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:49,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:49,461 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:49,461 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:49,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:49,478 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:15:49,478 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 [2022-12-14 13:15:49,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:49,496 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:49,496 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 [2022-12-14 13:15:49,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:49,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:49,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:49,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:49,565 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 13:15:49,566 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 210 treesize of output 209 [2022-12-14 13:15:49,628 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 [2022-12-14 13:15:49,722 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 [2022-12-14 13:15:49,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:49,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:49,796 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 [2022-12-14 13:15:49,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:49,829 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 13:15:49,829 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 [2022-12-14 13:15:49,852 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 [2022-12-14 13:15:49,860 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 [2022-12-14 13:15:49,920 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:50,004 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:50,556 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8184#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:50,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:50,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:50,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-14 13:15:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997585622] [2022-12-14 13:15:50,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:50,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 13:15:50,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 13:15:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 13:15:50,557 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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) [2022-12-14 13:15:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:50,584 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2022-12-14 13:15:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 13:15:50,585 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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 190 [2022-12-14 13:15:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:50,585 INFO L225 Difference]: With dead ends: 165 [2022-12-14 13:15:50,585 INFO L226 Difference]: Without dead ends: 117 [2022-12-14 13:15:50,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 533 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 13:15:50,586 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:50,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-14 13:15:50,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-12-14 13:15:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 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) [2022-12-14 13:15:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2022-12-14 13:15:50,591 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 190 [2022-12-14 13:15:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:50,591 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2022-12-14 13:15:50,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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) [2022-12-14 13:15:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2022-12-14 13:15:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-14 13:15:50,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:50,593 INFO L195 NwaCegarLoop]: trace histogram [120, 40, 22, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:50,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 13:15:50,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:50,794 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 732079097, now seen corresponding path program 12 times [2022-12-14 13:15:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:50,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561948908] [2022-12-14 13:15:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:50,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:50,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:50,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986576411] [2022-12-14 13:15:50,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:15:50,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:50,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:50,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:50,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 13:15:51,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:15:51,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:51,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 13:15:51,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:15:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8582 backedges. 3366 proven. 253 refuted. 0 times theorem prover too weak. 4963 trivial. 0 not checked. [2022-12-14 13:15:51,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:15:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8582 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2022-12-14 13:15:51,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:15:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561948908] [2022-12-14 13:15:51,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:15:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986576411] [2022-12-14 13:15:51,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986576411] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [868231864] [2022-12-14 13:15:51,813 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:15:51,813 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:15:51,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:15:51,813 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:15:51,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:15:51,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:51,832 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:15:51,832 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 [2022-12-14 13:15:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:51,851 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:15:51,852 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 [2022-12-14 13:15:51,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:51,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 13:15:51,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:51,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:15:51,919 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 13:15:51,919 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 210 treesize of output 209 [2022-12-14 13:15:51,984 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 [2022-12-14 13:15:52,082 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 [2022-12-14 13:15:52,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:52,162 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 [2022-12-14 13:15:52,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:15:52,205 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 13:15:52,206 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 [2022-12-14 13:15:52,251 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 [2022-12-14 13:15:52,262 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 [2022-12-14 13:15:52,325 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2022-12-14 13:15:52,425 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:15:53,055 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9986#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (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|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |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_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:15:53,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:15:53,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:15:53,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 41 [2022-12-14 13:15:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455022472] [2022-12-14 13:15:53,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:15:53,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 13:15:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:15:53,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 13:15:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=1880, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 13:15:53,058 INFO L87 Difference]: Start difference. First operand 117 states and 121 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) [2022-12-14 13:15:53,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:15:53,102 INFO L93 Difference]: Finished difference Result 182 states and 203 transitions. [2022-12-14 13:15:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 13:15:53,103 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 202 [2022-12-14 13:15:53,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:15:53,104 INFO L225 Difference]: With dead ends: 182 [2022-12-14 13:15:53,104 INFO L226 Difference]: Without dead ends: 134 [2022-12-14 13:15:53,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 545 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=876, Invalid=1880, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 13:15:53,106 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:15:53,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:15:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-12-14 13:15:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-12-14 13:15:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 129 states have internal predecessors, (132), 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) [2022-12-14 13:15:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2022-12-14 13:15:53,111 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 202 [2022-12-14 13:15:53,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:15:53,112 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2022-12-14 13:15:53,112 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) [2022-12-14 13:15:53,112 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2022-12-14 13:15:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-12-14 13:15:53,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:15:53,113 INFO L195 NwaCegarLoop]: trace histogram [120, 40, 39, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:15:53,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-14 13:15:53,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 13:15:53,315 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:15:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:15:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1809159097, now seen corresponding path program 13 times [2022-12-14 13:15:53,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:15:53,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161062935] [2022-12-14 13:15:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:15:53,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:15:53,402 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:15:53,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632564559] [2022-12-14 13:15:53,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:15:53,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:53,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:53,403 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:53,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 13:19:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:19:56,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:24:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:24:47,743 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:24:47,744 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:24:47,744 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:24:47,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 13:24:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 13:24:47,955 INFO L445 BasicCegarLoop]: Path program histogram: [13, 1, 1, 1] [2022-12-14 13:24:47,965 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:24:48,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:24:48 BoogieIcfgContainer [2022-12-14 13:24:48,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:24:48,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:24:48,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:24:48,072 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:24:48,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:15:29" (3/4) ... [2022-12-14 13:24:48,074 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 13:24:48,155 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:24:48,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:24:48,156 INFO L158 Benchmark]: Toolchain (without parser) took 559492.68ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 106.1MB in the beginning and 102.8MB in the end (delta: 3.3MB). Peak memory consumption was 111.5MB. Max. memory is 16.1GB. [2022-12-14 13:24:48,156 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:24:48,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.36ms. Allocated memory is still 140.5MB. Free memory was 106.1MB in the beginning and 95.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:24:48,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.13ms. Allocated memory is still 140.5MB. Free memory was 95.6MB in the beginning and 93.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:24:48,157 INFO L158 Benchmark]: Boogie Preprocessor took 19.61ms. Allocated memory is still 140.5MB. Free memory was 93.5MB in the beginning and 92.7MB in the end (delta: 823.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:24:48,157 INFO L158 Benchmark]: RCFGBuilder took 272.15ms. Allocated memory is still 140.5MB. Free memory was 92.7MB in the beginning and 77.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 13:24:48,157 INFO L158 Benchmark]: TraceAbstraction took 558914.00ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 76.7MB in the beginning and 120.6MB in the end (delta: -43.9MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB. [2022-12-14 13:24:48,157 INFO L158 Benchmark]: Witness Printer took 83.77ms. Allocated memory is still 247.5MB. Free memory was 120.6MB in the beginning and 102.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 13:24:48,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.36ms. Allocated memory is still 140.5MB. Free memory was 106.1MB in the beginning and 95.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.13ms. Allocated memory is still 140.5MB. Free memory was 95.6MB in the beginning and 93.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.61ms. Allocated memory is still 140.5MB. Free memory was 93.5MB in the beginning and 92.7MB in the end (delta: 823.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 272.15ms. Allocated memory is still 140.5MB. Free memory was 92.7MB in the beginning and 77.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 558914.00ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 76.7MB in the beginning and 120.6MB in the end (delta: -43.9MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB. * Witness Printer took 83.77ms. Allocated memory is still 247.5MB. Free memory was 120.6MB in the beginning and 102.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[40]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=6, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=7, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=8, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=9, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=10, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=11, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=12, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=13, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=14, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=15, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=16, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=17, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=18, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=19, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=20, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=21, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=22, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=23, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=24, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=25, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=26, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=27, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=28, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=29, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=30, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=31, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=32, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=33, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=34, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=35, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=36, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=37, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=38, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=39, x={3:0}, x={3:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=40, x={3:0}, x={3:0}] [L17] COND FALSE !(i < 40) [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={3:0}] [L49] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={3:0}, x={3:0}, x[i]=196] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=95, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=82, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=176, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-661, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-663, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-680, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-696, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-716, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-728, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-742, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-751, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=-762, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=1073742191, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=2147485146, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=2147485220, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=2147485295, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=2147484452, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=2147484442, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=2147483645, x={3:0}, x={3:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L49] RET, EXPR rangesum(x) VAL [rangesum(x)=113025455, x={3:0}] [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp VAL [ret=113025455, temp=-9, x={3:0}] [L52] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={3:0}, x={3:0}, x[i]=357] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=95, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=82, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=176, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-661, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-663, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-680, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-696, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-716, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-728, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-742, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-751, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=-762, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=1073742191, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=2147485146, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=2147485220, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=2147485295, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=2147484452, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=2147484442, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=2147483645, x={3:0}, x={3:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L52] RET, EXPR rangesum(x) VAL [rangesum(x)=113025455, ret=113025455, temp=-9, x={3:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=5, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=6, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=7, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=8, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=9, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=10, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=11, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=12, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=13, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=14, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=15, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=16, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=17, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=18, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=19, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=20, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=21, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=22, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=23, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=24, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=25, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=26, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=27, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=28, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=29, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=30, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=31, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=32, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=33, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=34, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=35, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=36, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=37, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=38, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=39, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L54] COND FALSE !(i<40 -1) [L57] x[40 -1] = temp VAL [i=39, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L58] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={3:0}, x={3:0}, x[i]=605] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=-13, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=81, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=-756, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-758, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-775, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-791, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-811, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-823, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-837, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-846, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-857, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=1073742096, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=2147485051, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=2147485125, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=2147485200, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=2147484357, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=2147484347, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=2147483550, x={3:0}, x={3:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=2147482715, x={3:0}, x={3:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L58] RET, EXPR rangesum(x) VAL [i=39, rangesum(x)=113025406, ret=113025455, ret2=113025455, temp=-835, x={3:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [i=39, ret=113025455, ret2=113025455, ret5=113025406, temp=-835, x={3:0}] [L61] reach_error() VAL [i=39, ret=113025455, ret2=113025455, ret5=113025406, temp=-835, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 558.8s, OverallIterations: 16, TraceHistogramMax: 120, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 692 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 511 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 592 IncrementalHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 181 mSDtfsCounter, 592 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3170 GetRequests, 2765 SyntacticMatches, 31 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4730 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=15, InterpolantAutomatonStates: 260, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 244.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1418 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 2126 ConstructedInterpolants, 0 QuantifiedInterpolants, 2624 SizeOfPredicates, 0 NumberOfNonLiveVariables, 5616 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 46751/50021 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 13:24:48,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e13cb5-a4c9-4cd1-a10f-2ca680e48d78/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE