./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-queue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp --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 a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:33:58,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:33:58,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:33:58,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:33:58,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:33:58,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:33:58,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:33:58,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:33:58,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:33:58,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:33:58,921 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:33:58,921 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:33:58,922 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:33:58,922 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:33:58,923 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:33:58,923 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:33:58,924 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:33:58,924 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:33:58,925 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:33:58,926 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:33:58,926 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:33:58,928 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:33:58,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:33:58,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:33:58,930 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:33:58,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:33:58,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:33:58,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:33:58,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:33:58,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:33:58,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:33:58,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:33:58,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:33:58,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:33:58,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:33:58,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:33:58,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:33:58,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:33:58,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:33:58,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:33:58,937 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:33:58,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:33:58,937 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:33:58,938 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:33:58,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:33:58,938 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 [2023-11-06 20:33:59,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:33:59,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:33:59,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:33:59,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:33:59,248 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:33:59,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/forester-heap/sll-queue-1.i [2023-11-06 20:34:02,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:34:02,793 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:34:02,793 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i [2023-11-06 20:34:02,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/data/2380f0be2/2d2858d217624fd787cf44b351864380/FLAG22b880869 [2023-11-06 20:34:02,833 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/data/2380f0be2/2d2858d217624fd787cf44b351864380 [2023-11-06 20:34:02,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:34:02,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:34:02,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:34:02,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:34:02,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:34:02,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:34:02" (1/1) ... [2023-11-06 20:34:02,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5cd668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:02, skipping insertion in model container [2023-11-06 20:34:02,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:34:02" (1/1) ... [2023-11-06 20:34:02,900 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:34:03,255 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2023-11-06 20:34:03,262 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2023-11-06 20:34:03,263 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2023-11-06 20:34:03,265 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2023-11-06 20:34:03,267 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2023-11-06 20:34:03,269 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2023-11-06 20:34:03,271 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2023-11-06 20:34:03,273 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2023-11-06 20:34:03,275 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2023-11-06 20:34:03,277 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2023-11-06 20:34:03,278 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2023-11-06 20:34:03,281 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2023-11-06 20:34:03,284 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2023-11-06 20:34:03,287 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2023-11-06 20:34:03,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:34:03,310 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:34:03,344 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2023-11-06 20:34:03,345 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2023-11-06 20:34:03,347 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2023-11-06 20:34:03,352 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2023-11-06 20:34:03,353 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2023-11-06 20:34:03,354 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2023-11-06 20:34:03,355 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2023-11-06 20:34:03,356 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2023-11-06 20:34:03,357 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2023-11-06 20:34:03,358 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2023-11-06 20:34:03,360 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2023-11-06 20:34:03,362 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2023-11-06 20:34:03,364 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2023-11-06 20:34:03,367 WARN L240 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_bcb3307c-123f-487a-b338-9e5e80973251/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2023-11-06 20:34:03,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:34:03,411 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:34:03,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03 WrapperNode [2023-11-06 20:34:03,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:34:03,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:34:03,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:34:03,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:34:03,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,482 INFO L138 Inliner]: procedures = 119, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 220 [2023-11-06 20:34:03,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:34:03,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:34:03,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:34:03,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:34:03,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:34:03,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:34:03,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:34:03,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:34:03,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (1/1) ... [2023-11-06 20:34:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:34:03,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:34:03,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:34:03,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:34:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:34:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:34:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:34:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:34:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:34:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:34:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:34:03,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:34:03,775 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:34:03,776 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:34:04,168 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:34:04,269 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:34:04,270 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-06 20:34:04,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:34:04 BoogieIcfgContainer [2023-11-06 20:34:04,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:34:04,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:34:04,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:34:04,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:34:04,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:34:02" (1/3) ... [2023-11-06 20:34:04,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58078d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:34:04, skipping insertion in model container [2023-11-06 20:34:04,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:03" (2/3) ... [2023-11-06 20:34:04,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58078d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:34:04, skipping insertion in model container [2023-11-06 20:34:04,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:34:04" (3/3) ... [2023-11-06 20:34:04,288 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2023-11-06 20:34:04,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:34:04,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 20:34:04,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:34:04,391 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;@431c6e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:34:04,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-06 20:34:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 75 states have internal predecessors, (125), 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) [2023-11-06 20:34:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 20:34:04,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:04,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 20:34:04,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:04,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 11205579, now seen corresponding path program 1 times [2023-11-06 20:34:04,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:04,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483667264] [2023-11-06 20:34:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:04,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:04,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:04,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483667264] [2023-11-06 20:34:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483667264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:04,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:04,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:34:04,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930657066] [2023-11-06 20:34:04,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:04,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:34:04,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:04,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:34:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:34:04,700 INFO L87 Difference]: Start difference. First operand has 76 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 75 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-06 20:34:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:04,770 INFO L93 Difference]: Finished difference Result 151 states and 249 transitions. [2023-11-06 20:34:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:34:04,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-11-06 20:34:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:04,785 INFO L225 Difference]: With dead ends: 151 [2023-11-06 20:34:04,785 INFO L226 Difference]: Without dead ends: 74 [2023-11-06 20:34:04,789 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 [2023-11-06 20:34:04,798 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:04,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:34:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-06 20:34:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-06 20:34:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3) internal successors, (78), 73 states have internal predecessors, (78), 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) [2023-11-06 20:34:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2023-11-06 20:34:04,857 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 4 [2023-11-06 20:34:04,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:04,858 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2023-11-06 20:34:04,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-06 20:34:04,859 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2023-11-06 20:34:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:34:04,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:04,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:34:04,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:34:04,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:04,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:04,861 INFO L85 PathProgramCache]: Analyzing trace with hash 345948564, now seen corresponding path program 1 times [2023-11-06 20:34:04,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:04,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453414883] [2023-11-06 20:34:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:04,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:05,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:05,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453414883] [2023-11-06 20:34:05,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453414883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:05,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:05,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:34:05,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126029217] [2023-11-06 20:34:05,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:05,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:34:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:34:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:34:05,160 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-06 20:34:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:05,265 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2023-11-06 20:34:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:34:05,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-06 20:34:05,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:05,271 INFO L225 Difference]: With dead ends: 74 [2023-11-06 20:34:05,271 INFO L226 Difference]: Without dead ends: 64 [2023-11-06 20:34:05,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:34:05,274 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:05,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:34:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-06 20:34:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-06 20:34:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 63 states have internal predecessors, (68), 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) [2023-11-06 20:34:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2023-11-06 20:34:05,295 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 5 [2023-11-06 20:34:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:05,296 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2023-11-06 20:34:05,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-06 20:34:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2023-11-06 20:34:05,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 20:34:05,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:05,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:34:05,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:05,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1744215704, now seen corresponding path program 1 times [2023-11-06 20:34:05,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:05,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902510419] [2023-11-06 20:34:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:05,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:05,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902510419] [2023-11-06 20:34:05,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902510419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:05,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:05,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:34:05,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761584228] [2023-11-06 20:34:05,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:05,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:34:05,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:05,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:34:05,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:34:05,387 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) 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) [2023-11-06 20:34:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:05,423 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2023-11-06 20:34:05,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:34:05,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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 [2023-11-06 20:34:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:05,425 INFO L225 Difference]: With dead ends: 64 [2023-11-06 20:34:05,425 INFO L226 Difference]: Without dead ends: 62 [2023-11-06 20:34:05,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:34:05,427 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:05,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 66 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:34:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-06 20:34:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-06 20:34:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 61 states have internal predecessors, (66), 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) [2023-11-06 20:34:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2023-11-06 20:34:05,437 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 7 [2023-11-06 20:34:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:05,437 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2023-11-06 20:34:05,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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) [2023-11-06 20:34:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2023-11-06 20:34:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:34:05,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:05,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:05,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:34:05,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:05,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:05,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1166156785, now seen corresponding path program 1 times [2023-11-06 20:34:05,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:05,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792330851] [2023-11-06 20:34:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:05,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:05,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:05,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792330851] [2023-11-06 20:34:05,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792330851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:05,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:05,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:34:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009238518] [2023-11-06 20:34:05,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:05,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:34:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:05,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:34:05,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:34:05,542 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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) [2023-11-06 20:34:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:05,598 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2023-11-06 20:34:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:34:05,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 11 [2023-11-06 20:34:05,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:05,600 INFO L225 Difference]: With dead ends: 130 [2023-11-06 20:34:05,600 INFO L226 Difference]: Without dead ends: 78 [2023-11-06 20:34:05,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:34:05,602 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 12 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:05,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 115 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:34:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-06 20:34:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2023-11-06 20:34:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 68 states have internal predecessors, (74), 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) [2023-11-06 20:34:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2023-11-06 20:34:05,614 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 11 [2023-11-06 20:34:05,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:05,614 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2023-11-06 20:34:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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) [2023-11-06 20:34:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2023-11-06 20:34:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:34:05,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:05,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:05,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:34:05,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:05,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1578859959, now seen corresponding path program 1 times [2023-11-06 20:34:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:05,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496579648] [2023-11-06 20:34:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:05,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:05,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:05,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496579648] [2023-11-06 20:34:05,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496579648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:05,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:05,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:34:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860845527] [2023-11-06 20:34:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:05,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:34:05,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:34:05,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:34:05,724 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:05,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:05,815 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2023-11-06 20:34:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:34:05,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 20:34:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:05,816 INFO L225 Difference]: With dead ends: 78 [2023-11-06 20:34:05,817 INFO L226 Difference]: Without dead ends: 64 [2023-11-06 20:34:05,817 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 [2023-11-06 20:34:05,818 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 4 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:05,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 171 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:34:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-06 20:34:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-06 20:34:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 63 states have internal predecessors, (68), 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) [2023-11-06 20:34:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2023-11-06 20:34:05,827 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2023-11-06 20:34:05,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:05,827 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2023-11-06 20:34:05,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:05,828 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2023-11-06 20:34:05,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 20:34:05,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:05,829 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:05,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:34:05,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:05,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:05,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1610313588, now seen corresponding path program 1 times [2023-11-06 20:34:05,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:05,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084964710] [2023-11-06 20:34:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:05,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:06,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:06,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084964710] [2023-11-06 20:34:06,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084964710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:34:06,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437241744] [2023-11-06 20:34:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:06,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:34:06,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:34:06,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:34:06,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 20:34:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:06,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 20:34:06,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:34:06,426 INFO L351 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 6 treesize of output 5 [2023-11-06 20:34:06,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:34:06,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-06 20:34:06,630 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 20:34:06,631 INFO L351 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2023-11-06 20:34:06,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 20:34:06,803 INFO L351 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 24 treesize of output 12 [2023-11-06 20:34:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:06,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 20:34:07,107 INFO L322 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2023-11-06 20:34:07,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 170 treesize of output 195 [2023-11-06 20:34:07,153 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 20:34:07,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 123 [2023-11-06 20:34:07,225 INFO L322 Elim1Store]: treesize reduction 31, result has 43.6 percent of original size [2023-11-06 20:34:07,226 INFO L351 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 212 treesize of output 208 [2023-11-06 20:34:07,480 INFO L351 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 50 treesize of output 46 [2023-11-06 20:34:07,500 INFO L351 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 33 treesize of output 23 [2023-11-06 20:34:07,588 INFO L322 Elim1Store]: treesize reduction 51, result has 49.0 percent of original size [2023-11-06 20:34:07,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 117 treesize of output 161 [2023-11-06 20:34:07,900 INFO L322 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2023-11-06 20:34:07,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 204 [2023-11-06 20:34:08,752 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:09,280 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 20:34:09,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 176 [2023-11-06 20:34:09,305 INFO L351 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 14 treesize of output 10 [2023-11-06 20:34:09,324 INFO L351 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 20 treesize of output 14 [2023-11-06 20:34:09,443 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:09,456 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:09,475 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:09,483 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:09,490 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:09,497 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:09,510 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 20:34:09,511 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2023-11-06 20:34:09,540 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 20:34:09,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2023-11-06 20:34:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:09,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437241744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 20:34:09,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1423819413] [2023-11-06 20:34:09,713 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-06 20:34:09,714 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 20:34:09,718 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 20:34:09,724 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 20:34:09,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 20:34:11,527 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 20:34:14,572 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1231#(and (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) 0) 0) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~status~0#1| 1) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) 0) 0))' at error location [2023-11-06 20:34:14,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 20:34:14,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 20:34:14,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 20:34:14,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135654441] [2023-11-06 20:34:14,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 20:34:14,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 20:34:14,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 20:34:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-06 20:34:14,575 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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) [2023-11-06 20:34:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:14,826 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2023-11-06 20:34:14,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:34:14,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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 17 [2023-11-06 20:34:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:14,828 INFO L225 Difference]: With dead ends: 125 [2023-11-06 20:34:14,828 INFO L226 Difference]: Without dead ends: 123 [2023-11-06 20:34:14,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-06 20:34:14,830 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 51 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:14,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 231 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 20:34:14,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-06 20:34:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 77. [2023-11-06 20:34:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 76 states have internal predecessors, (83), 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) [2023-11-06 20:34:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2023-11-06 20:34:14,842 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 17 [2023-11-06 20:34:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:14,847 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2023-11-06 20:34:14,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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) [2023-11-06 20:34:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2023-11-06 20:34:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 20:34:14,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:14,849 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:14,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 20:34:15,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:34:15,050 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:15,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:15,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1302176597, now seen corresponding path program 1 times [2023-11-06 20:34:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:15,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38504769] [2023-11-06 20:34:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:15,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:15,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:15,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38504769] [2023-11-06 20:34:15,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38504769] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:34:15,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424671656] [2023-11-06 20:34:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:15,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:34:15,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:34:15,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:34:15,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 20:34:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:15,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 20:34:15,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:34:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:15,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 20:34:15,373 INFO L322 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2023-11-06 20:34:15,374 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 109 treesize of output 140 [2023-11-06 20:34:15,424 INFO L322 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2023-11-06 20:34:15,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 122 [2023-11-06 20:34:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:15,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424671656] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 20:34:15,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [843906143] [2023-11-06 20:34:15,516 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-06 20:34:15,516 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 20:34:15,517 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 20:34:15,517 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 20:34:15,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 20:34:18,912 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 20:34:21,467 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1606#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~status~0#1| 2) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) 0) 0) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) 0) 0))' at error location [2023-11-06 20:34:21,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 20:34:21,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 20:34:21,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-11-06 20:34:21,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437524346] [2023-11-06 20:34:21,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 20:34:21,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:34:21,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:21,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:34:21,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-06 20:34:21,470 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-06 20:34:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:21,534 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2023-11-06 20:34:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:34:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-06 20:34:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:21,541 INFO L225 Difference]: With dead ends: 133 [2023-11-06 20:34:21,541 INFO L226 Difference]: Without dead ends: 88 [2023-11-06 20:34:21,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-06 20:34:21,545 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 19 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:21,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 165 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:34:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-06 20:34:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2023-11-06 20:34:21,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 78 states have internal predecessors, (84), 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) [2023-11-06 20:34:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2023-11-06 20:34:21,566 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 18 [2023-11-06 20:34:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:21,566 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2023-11-06 20:34:21,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-06 20:34:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2023-11-06 20:34:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 20:34:21,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:21,569 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:21,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 20:34:21,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:34:21,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:21,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1184113433, now seen corresponding path program 2 times [2023-11-06 20:34:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946204429] [2023-11-06 20:34:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:21,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:21,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946204429] [2023-11-06 20:34:21,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946204429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:34:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109584938] [2023-11-06 20:34:21,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 20:34:21,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:34:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:34:21,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:34:21,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 20:34:22,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 20:34:22,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 20:34:22,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 20:34:22,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:34:22,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 20:34:22,192 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 20:34:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:22,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 20:34:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:22,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109584938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 20:34:22,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1084400179] [2023-11-06 20:34:22,301 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-06 20:34:22,302 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 20:34:22,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 20:34:22,303 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 20:34:22,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 20:34:23,505 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 20:34:25,983 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2025#(and (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) 0) 0) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~status~0#1| 1) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) 0) 0))' at error location [2023-11-06 20:34:25,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 20:34:25,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 20:34:25,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 20:34:25,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269828402] [2023-11-06 20:34:25,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 20:34:25,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 20:34:25,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 20:34:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-06 20:34:25,985 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:26,141 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2023-11-06 20:34:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:34:26,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-06 20:34:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:26,143 INFO L225 Difference]: With dead ends: 143 [2023-11-06 20:34:26,143 INFO L226 Difference]: Without dead ends: 102 [2023-11-06 20:34:26,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-06 20:34:26,145 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 132 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:26,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 269 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:34:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-06 20:34:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 83. [2023-11-06 20:34:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 82 states have internal predecessors, (88), 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) [2023-11-06 20:34:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2023-11-06 20:34:26,155 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 23 [2023-11-06 20:34:26,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:26,155 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2023-11-06 20:34:26,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2023-11-06 20:34:26,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 20:34:26,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:26,157 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:26,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 20:34:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:34:26,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-06 20:34:26,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1629479514, now seen corresponding path program 2 times [2023-11-06 20:34:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510762975] [2023-11-06 20:34:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:26,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:26,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510762975] [2023-11-06 20:34:26,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510762975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:34:26,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522594122] [2023-11-06 20:34:26,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 20:34:26,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:34:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:34:26,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:34:26,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb3307c-123f-487a-b338-9e5e80973251/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 20:34:27,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 20:34:27,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 20:34:27,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 20:34:27,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:34:27,057 INFO L351 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 6 treesize of output 5 [2023-11-06 20:34:27,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 16 treesize of output 16 [2023-11-06 20:34:27,115 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 20:34:27,116 INFO L351 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 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 20:34:27,121 INFO L351 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 [2023-11-06 20:34:27,135 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 20:34:27,143 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 20:34:27,166 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 20:34:27,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 20:34:27,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:34:27,320 INFO L322 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2023-11-06 20:34:27,320 INFO L351 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 53 [2023-11-06 20:34:27,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:34:27,344 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 20:34:27,345 INFO L351 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 1 case distinctions, treesize of input 20 treesize of output 14 [2023-11-06 20:34:27,476 INFO L351 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 24 treesize of output 12 [2023-11-06 20:34:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:34:27,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 20:34:28,034 INFO L322 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2023-11-06 20:34:28,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 170 treesize of output 195 [2023-11-06 20:34:28,053 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 20:34:28,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 123 [2023-11-06 20:34:28,096 INFO L322 Elim1Store]: treesize reduction 31, result has 43.6 percent of original size [2023-11-06 20:34:28,097 INFO L351 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 290 treesize of output 276 [2023-11-06 20:34:28,406 INFO L322 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-06 20:34:28,407 INFO L351 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 2 case distinctions, treesize of input 34 treesize of output 13 [2023-11-06 20:34:28,448 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 20:34:28,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 819 treesize of output 803 [2023-11-06 20:34:28,480 INFO L351 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 567 treesize of output 561 [2023-11-06 20:34:28,510 INFO L351 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 561 treesize of output 557 [2023-11-06 20:34:28,530 INFO L351 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 557 treesize of output 553 [2023-11-06 20:34:28,547 INFO L351 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 553 treesize of output 551 [2023-11-06 20:34:28,567 INFO L351 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 551 treesize of output 549 [2023-11-06 20:34:28,603 INFO L351 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 549 treesize of output 545 [2023-11-06 20:34:28,622 INFO L351 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 545 treesize of output 543 [2023-11-06 20:34:28,649 INFO L351 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 543 treesize of output 539 [2023-11-06 20:34:28,669 INFO L351 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 539 treesize of output 537 [2023-11-06 20:34:28,689 INFO L351 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 537 treesize of output 533 [2023-11-06 20:34:28,708 INFO L351 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 533 treesize of output 529 [2023-11-06 20:34:28,727 INFO L351 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 529 treesize of output 525 [2023-11-06 20:34:28,746 INFO L351 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 525 treesize of output 523 [2023-11-06 20:34:29,119 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,131 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,141 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,148 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,183 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,194 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,204 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,223 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,255 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,270 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,283 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,292 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,331 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,345 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,356 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,380 INFO L351 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 6 treesize of output 4 [2023-11-06 20:34:29,572 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 20:34:29,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 652 treesize of output 546