./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/packet_filter.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba --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 d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f --- 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-b5237d8 [2022-11-22 01:24:43,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:24:43,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:24:43,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:24:43,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:24:43,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:24:43,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:24:43,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:24:43,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:24:43,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:24:43,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:24:43,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:24:43,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:24:43,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:24:43,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:24:43,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:24:43,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:24:43,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:24:43,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:24:43,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:24:43,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:24:43,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:24:43,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:24:43,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:24:43,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:24:43,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:24:43,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:24:43,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:24:43,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:24:43,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:24:43,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:24:43,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:24:43,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:24:43,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:24:43,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:24:43,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:24:43,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:24:43,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:24:43,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:24:43,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:24:43,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:24:43,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:24:43,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:24:43,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:24:43,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:24:43,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:24:43,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:24:43,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:24:43,277 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:24:43,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:24:43,277 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:24:43,278 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:24:43,279 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:24:43,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:24:43,280 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:24:43,280 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:24:43,280 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:24:43,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:24:43,281 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:24:43,281 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:24:43,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:24:43,282 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:24:43,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:24:43,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:24:43,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:24:43,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:24:43,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:24:43,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:24:43,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:24:43,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:24:43,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:24:43,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:24:43,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:24:43,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:24:43,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:24:43,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:24:43,287 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:24:43,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:24:43,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:24:43,287 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:24:43,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:24:43,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:24:43,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:24:43,288 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_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f [2022-11-22 01:24:43,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:24:43,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:24:43,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:24:43,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:24:43,728 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:24:43,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/heap-data/packet_filter.i [2022-11-22 01:24:47,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:24:47,560 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:24:47,572 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/sv-benchmarks/c/heap-data/packet_filter.i [2022-11-22 01:24:47,587 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/data/186df2b07/29aea78200e74c7db798658709cc8a38/FLAGad1bddf3f [2022-11-22 01:24:47,826 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/data/186df2b07/29aea78200e74c7db798658709cc8a38 [2022-11-22 01:24:47,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:24:47,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:24:47,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:24:47,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:24:47,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:24:47,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:24:47" (1/1) ... [2022-11-22 01:24:47,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336df1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:47, skipping insertion in model container [2022-11-22 01:24:47,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:24:47" (1/1) ... [2022-11-22 01:24:47,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:24:47,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:24:48,231 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_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2022-11-22 01:24:48,240 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_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2022-11-22 01:24:48,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:24:48,265 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:24:48,338 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_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2022-11-22 01:24:48,354 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_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2022-11-22 01:24:48,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:24:48,409 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:24:48,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48 WrapperNode [2022-11-22 01:24:48,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:24:48,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:24:48,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:24:48,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:24:48,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,491 INFO L138 Inliner]: procedures = 130, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2022-11-22 01:24:48,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:24:48,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:24:48,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:24:48,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:24:48,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:24:48,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:24:48,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:24:48,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:24:48,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (1/1) ... [2022-11-22 01:24:48,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:24:48,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:24:48,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:24:48,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:24:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:24:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:24:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:24:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:24:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2022-11-22 01:24:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2022-11-22 01:24:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:24:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:24:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:24:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2022-11-22 01:24:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure send [2022-11-22 01:24:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2022-11-22 01:24:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:24:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:24:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:24:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:24:48,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:24:48,849 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:24:48,851 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:24:49,342 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:24:49,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:24:49,406 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:24:49,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:24:49 BoogieIcfgContainer [2022-11-22 01:24:49,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:24:49,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:24:49,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:24:49,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:24:49,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:24:47" (1/3) ... [2022-11-22 01:24:49,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2789cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:24:49, skipping insertion in model container [2022-11-22 01:24:49,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:48" (2/3) ... [2022-11-22 01:24:49,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2789cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:24:49, skipping insertion in model container [2022-11-22 01:24:49,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:24:49" (3/3) ... [2022-11-22 01:24:49,420 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2022-11-22 01:24:49,439 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:24:49,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 01:24:49,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:24:49,500 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;@14db8960, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:24:49,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 01:24:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:24:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:24:49,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:49,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:24:49,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:49,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:49,521 INFO L85 PathProgramCache]: Analyzing trace with hash 297298087, now seen corresponding path program 1 times [2022-11-22 01:24:49,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:49,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096179744] [2022-11-22 01:24:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:49,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:49,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:49,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096179744] [2022-11-22 01:24:49,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096179744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:49,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:49,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:24:49,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601943109] [2022-11-22 01:24:49,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:49,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:24:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:49,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:24:49,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:24:49,834 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:49,946 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-11-22 01:24:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:24:49,948 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:24:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:49,956 INFO L225 Difference]: With dead ends: 51 [2022-11-22 01:24:49,957 INFO L226 Difference]: Without dead ends: 32 [2022-11-22 01:24:49,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:24:49,963 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:49,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:24:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-22 01:24:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-22 01:24:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:24:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-22 01:24:50,015 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 6 [2022-11-22 01:24:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:50,016 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-22 01:24:50,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-22 01:24:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:24:50,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:50,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:50,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:24:50,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:50,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:50,022 INFO L85 PathProgramCache]: Analyzing trace with hash -350648386, now seen corresponding path program 1 times [2022-11-22 01:24:50,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:50,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632560741] [2022-11-22 01:24:50,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:50,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:50,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632560741] [2022-11-22 01:24:50,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632560741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:50,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:50,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:24:50,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15698875] [2022-11-22 01:24:50,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:50,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:24:50,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:50,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:24:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:24:50,323 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:50,528 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-22 01:24:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:24:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:24:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:50,531 INFO L225 Difference]: With dead ends: 58 [2022-11-22 01:24:50,531 INFO L226 Difference]: Without dead ends: 42 [2022-11-22 01:24:50,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:50,533 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:50,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:24:50,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-22 01:24:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-22 01:24:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:24:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-22 01:24:50,545 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 7 [2022-11-22 01:24:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:50,546 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-22 01:24:50,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-22 01:24:50,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:24:50,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:50,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:50,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:24:50,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2014810633, now seen corresponding path program 1 times [2022-11-22 01:24:50,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:50,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764268861] [2022-11-22 01:24:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:50,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:50,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:50,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764268861] [2022-11-22 01:24:50,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764268861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:50,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:50,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:24:50,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104150059] [2022-11-22 01:24:50,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:24:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:24:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:24:50,768 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:50,956 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-11-22 01:24:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:24:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:24:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:50,958 INFO L225 Difference]: With dead ends: 46 [2022-11-22 01:24:50,958 INFO L226 Difference]: Without dead ends: 34 [2022-11-22 01:24:50,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:24:50,960 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:50,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:24:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-22 01:24:50,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-22 01:24:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:24:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-22 01:24:50,983 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 8 [2022-11-22 01:24:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:50,984 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-22 01:24:50,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-22 01:24:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:24:50,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:50,987 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:50,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:24:50,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:50,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 898291988, now seen corresponding path program 1 times [2022-11-22 01:24:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:50,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468767316] [2022-11-22 01:24:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:50,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:51,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:51,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468767316] [2022-11-22 01:24:51,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468767316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:24:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468377780] [2022-11-22 01:24:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:51,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:24:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:24:51,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:24:51,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:24:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:51,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-22 01:24:51,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:24:51,888 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 01:24:51,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:24:51,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:51,980 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 14 treesize of output 16 [2022-11-22 01:24:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:51,996 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 14 treesize of output 16 [2022-11-22 01:24:52,020 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-22 01:24:52,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-22 01:24:52,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:24:52,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:24:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:52,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:24:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:52,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468377780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:24:52,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2061857859] [2022-11-22 01:24:52,469 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:24:52,469 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:24:52,473 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:24:52,480 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:24:52,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:24:52,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:52,599 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-22 01:24:52,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-22 01:24:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:52,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:52,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-22 01:24:52,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:52,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-22 01:24:52,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-22 01:24:53,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,324 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-22 01:24:53,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-22 01:24:53,483 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-22 01:24:53,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 50 [2022-11-22 01:24:53,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:53,598 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-22 01:24:53,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 55 [2022-11-22 01:24:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2022-11-22 01:24:54,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-22 01:24:54,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-22 01:24:54,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-22 01:24:54,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-22 01:24:54,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:54,686 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-22 01:24:54,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 65 [2022-11-22 01:24:54,867 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:24:56,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2061857859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:56,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:24:56,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 10 [2022-11-22 01:24:56,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253134210] [2022-11-22 01:24:56,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:56,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:24:56,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:24:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:24:56,379 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:56,787 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-22 01:24:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:24:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:24:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:56,789 INFO L225 Difference]: With dead ends: 67 [2022-11-22 01:24:56,789 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 01:24:56,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:24:56,790 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:56,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 58 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:24:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 01:24:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2022-11-22 01:24:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:24:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-11-22 01:24:56,805 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 11 [2022-11-22 01:24:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:56,805 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-11-22 01:24:56,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-11-22 01:24:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:24:56,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:56,807 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:56,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:24:57,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:24:57,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2077256563, now seen corresponding path program 1 times [2022-11-22 01:24:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:57,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243762713] [2022-11-22 01:24:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:57,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:57,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:57,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243762713] [2022-11-22 01:24:57,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243762713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:24:57,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713739945] [2022-11-22 01:24:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:57,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:24:57,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:24:57,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:24:57,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:24:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:57,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-22 01:24:57,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:24:57,517 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:24:57,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-22 01:24:57,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:57,550 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 14 treesize of output 16 [2022-11-22 01:24:57,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:57,561 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 14 treesize of output 16 [2022-11-22 01:24:57,585 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-22 01:24:57,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-22 01:24:57,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:24:57,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:24:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:57,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:24:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:57,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713739945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:24:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [117407862] [2022-11-22 01:24:57,819 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:24:57,820 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:24:57,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:24:57,820 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:24:57,820 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:24:57,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:57,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:57,891 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-22 01:24:57,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-22 01:24:57,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:57,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:57,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-22 01:24:58,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-22 01:24:58,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,381 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-22 01:24:58,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-22 01:24:58,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-22 01:24:58,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-22 01:24:58,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-22 01:24:58,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2022-11-22 01:24:58,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:58,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-22 01:24:58,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,320 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-22 01:24:59,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-22 01:24:59,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,422 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 01:24:59,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 46 [2022-11-22 01:24:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,507 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:24:59,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 18 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 47 [2022-11-22 01:24:59,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:24:59,591 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 01:24:59,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 46 [2022-11-22 01:24:59,863 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:25:01,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [117407862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:01,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:25:01,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 11 [2022-11-22 01:25:01,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012870429] [2022-11-22 01:25:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:01,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:25:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:01,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:25:01,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:25:01,610 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:25:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:02,488 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-11-22 01:25:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:25:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 01:25:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:02,491 INFO L225 Difference]: With dead ends: 55 [2022-11-22 01:25:02,491 INFO L226 Difference]: Without dead ends: 43 [2022-11-22 01:25:02,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:25:02,492 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:02,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 81 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:25:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-22 01:25:02,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2022-11-22 01:25:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:25:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-22 01:25:02,502 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 12 [2022-11-22 01:25:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:02,502 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-22 01:25:02,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:25:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-22 01:25:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 01:25:02,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:02,503 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:02,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:25:02,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:25:02,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -279614113, now seen corresponding path program 1 times [2022-11-22 01:25:02,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:02,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370268899] [2022-11-22 01:25:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:25:04,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:04,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370268899] [2022-11-22 01:25:04,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370268899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:25:04,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284827169] [2022-11-22 01:25:04,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:04,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:25:04,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:25:04,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:25:04,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da0598ca-1e77-4924-9f4a-f5d63d8a1f54/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:25:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:04,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-22 01:25:04,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:25:04,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-22 01:25:04,648 INFO L321 Elim1Store]: treesize reduction 40, result has 42.9 percent of original size [2022-11-22 01:25:04,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 64 [2022-11-22 01:25:04,702 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-22 01:25:04,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-22 01:25:04,755 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-22 01:25:04,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-22 01:25:04,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-22 01:25:04,844 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-22 01:25:04,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 60 [2022-11-22 01:25:04,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-22 01:25:04,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-22 01:25:04,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-22 01:25:05,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:25:05,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:25:05,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 5 [2022-11-22 01:25:05,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:25:05,221 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-11-22 01:25:05,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 96 [2022-11-22 01:25:05,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2022-11-22 01:25:05,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 39 [2022-11-22 01:25:05,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:05,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:05,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 20 treesize of output 14 [2022-11-22 01:25:05,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:25:05,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:25:05,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2022-11-22 01:25:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:25:05,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:25:06,402 INFO L321 Elim1Store]: treesize reduction 41, result has 62.0 percent of original size [2022-11-22 01:25:06,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 91 [2022-11-22 01:25:06,456 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-11-22 01:25:06,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 93 treesize of output 77 [2022-11-22 01:25:06,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 23 treesize of output 19 [2022-11-22 01:25:06,690 INFO L321 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2022-11-22 01:25:06,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 1 [2022-11-22 01:25:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:25:06,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284827169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:25:06,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [399063009] [2022-11-22 01:25:06,831 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-22 01:25:06,831 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:25:06,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:25:06,832 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:25:06,832 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:25:06,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:06,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:06,907 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-22 01:25:06,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-22 01:25:06,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:06,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:06,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-22 01:25:06,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-22 01:25:07,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-22 01:25:07,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-22 01:25:07,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-22 01:25:07,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:07,451 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-22 01:25:07,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-22 01:25:08,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:08,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:08,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:25:08,425 INFO L217 Elim1Store]: Index analysis took 122 ms [2022-11-22 01:25:45,675 WARN L233 SmtUtils]: Spent 37.03s on a formula simplification. DAG size of input: 272 DAG size of output: 179 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 01:25:45,677 INFO L321 Elim1Store]: treesize reduction 744, result has 48.6 percent of original size [2022-11-22 01:25:45,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 42 case distinctions, treesize of input 17346246 treesize of output 2913182 [2022-11-22 01:25:57,628 WARN L233 SmtUtils]: Spent 11.94s on a formula simplification that was a NOOP. DAG size: 1409 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:26:09,625 WARN L233 SmtUtils]: Spent 11.34s on a formula simplification that was a NOOP. DAG size: 1404 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:26:10,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:10,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:10,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:10,500 INFO L217 Elim1Store]: Index analysis took 148 ms [2022-11-22 01:26:10,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2022-11-22 01:26:21,950 WARN L233 SmtUtils]: Spent 11.11s on a formula simplification that was a NOOP. DAG size: 1402 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:26:33,225 WARN L233 SmtUtils]: Spent 11.27s on a formula simplification that was a NOOP. DAG size: 1399 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:26:33,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:33,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:34,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:34,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-22 01:26:45,823 WARN L233 SmtUtils]: Spent 11.41s on a formula simplification that was a NOOP. DAG size: 1401 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:26:57,744 WARN L233 SmtUtils]: Spent 11.90s on a formula simplification that was a NOOP. DAG size: 1393 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:26:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:58,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:26:58,480 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 23 treesize of output 17 [2022-11-22 01:27:10,740 WARN L233 SmtUtils]: Spent 12.26s on a formula simplification that was a NOOP. DAG size: 1392 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:27:34,047 WARN L233 SmtUtils]: Spent 11.39s on a formula simplification that was a NOOP. DAG size: 1381 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:27:34,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:27:35,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:27:35,132 INFO L217 Elim1Store]: Index analysis took 372 ms [2022-11-22 01:27:37,633 INFO L321 Elim1Store]: treesize reduction 84, result has 43.6 percent of original size [2022-11-22 01:27:37,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 46 treesize of output 77 [2022-11-22 01:27:49,063 WARN L233 SmtUtils]: Spent 11.43s on a formula simplification that was a NOOP. DAG size: 1386 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:28:11,951 WARN L233 SmtUtils]: Spent 11.51s on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:28:12,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:28:12,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 01:28:24,199 WARN L233 SmtUtils]: Spent 11.66s on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:28:49,286 WARN L233 SmtUtils]: Spent 12.24s on a formula simplification that was a NOOP. DAG size: 1364 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:29:01,390 WARN L233 SmtUtils]: Spent 11.76s on a formula simplification that was a NOOP. DAG size: 1360 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:29:01,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:01,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2022-11-22 01:29:14,331 WARN L233 SmtUtils]: Spent 12.38s on a formula simplification that was a NOOP. DAG size: 1356 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:29:28,016 WARN L233 SmtUtils]: Spent 13.68s on a formula simplification that was a NOOP. DAG size: 1350 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:29:28,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:29,870 INFO L321 Elim1Store]: treesize reduction 228, result has 50.1 percent of original size [2022-11-22 01:29:29,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 286 treesize of output 400 [2022-11-22 01:29:42,986 WARN L233 SmtUtils]: Spent 13.11s on a formula simplification that was a NOOP. DAG size: 1419 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:29:54,862 WARN L233 SmtUtils]: Spent 11.87s on a formula simplification that was a NOOP. DAG size: 1417 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:29:56,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:56,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:29:56,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:29:56,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 198 [2022-11-22 01:29:56,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:56,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:56,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-22 01:29:56,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:56,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:29:56,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:29:56,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 198 [2022-11-22 01:29:56,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:56,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:56,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-22 01:30:21,978 WARN L233 SmtUtils]: Spent 12.21s on a formula simplification that was a NOOP. DAG size: 1200 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:30:40,930 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 933 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:33:06,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:33:06,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:33:06,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 121 [2022-11-22 01:33:06,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:33:06,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:33:06,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30