./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS --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 5990b1cf211e12a23ca85722a0e539783495fb8504bce43e0d5e789fe089f178 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:10:35,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:10:35,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:10:35,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:10:35,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:10:35,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:10:35,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:10:35,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:10:35,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:10:35,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:10:35,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:10:35,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:10:35,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:10:35,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:10:35,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:10:35,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:10:35,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:10:35,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:10:35,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:10:35,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:10:35,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:10:35,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:10:35,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:10:35,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:10:35,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:10:35,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:10:35,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:10:35,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:10:35,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:10:35,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:10:35,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:10:35,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:10:35,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:10:35,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:10:35,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:10:35,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:10:35,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:10:35,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:10:35,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:10:36,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:10:36,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:10:36,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:10:36,050 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:10:36,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:10:36,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:10:36,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:10:36,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:10:36,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:10:36,054 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:10:36,054 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:10:36,054 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:10:36,055 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:10:36,056 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:10:36,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:10:36,056 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:10:36,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:10:36,057 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:10:36,057 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:10:36,057 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:10:36,058 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:10:36,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:10:36,059 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:10:36,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:10:36,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:10:36,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:10:36,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:10:36,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:10:36,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:10:36,060 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:10:36,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:10:36,061 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:10:36,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:10:36,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:10:36,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:10:36,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:36,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:10:36,063 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:10:36,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:10:36,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:10:36,063 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:10:36,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:10:36,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:10:36,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:10:36,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5990b1cf211e12a23ca85722a0e539783495fb8504bce43e0d5e789fe089f178 [2022-11-19 07:10:36,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:10:36,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:10:36,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:10:36,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:10:36,435 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:10:36,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2022-11-19 07:10:36,518 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/data/a841c0b7a/8c84ef81491346c9b62c65372787be4d/FLAG74b51404f [2022-11-19 07:10:37,190 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:10:37,191 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2022-11-19 07:10:37,209 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/data/a841c0b7a/8c84ef81491346c9b62c65372787be4d/FLAG74b51404f [2022-11-19 07:10:37,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/data/a841c0b7a/8c84ef81491346c9b62c65372787be4d [2022-11-19 07:10:37,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:10:37,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:10:37,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:37,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:10:37,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:10:37,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:37" (1/1) ... [2022-11-19 07:10:37,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b28b8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:37, skipping insertion in model container [2022-11-19 07:10:37,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:37" (1/1) ... [2022-11-19 07:10:37,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:10:37,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:10:37,973 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18815,18828] [2022-11-19 07:10:38,011 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25895,25908] [2022-11-19 07:10:38,027 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29420,29433] [2022-11-19 07:10:38,043 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32798,32811] [2022-11-19 07:10:38,061 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36856,36869] [2022-11-19 07:10:38,081 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40310,40323] [2022-11-19 07:10:38,097 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43875,43888] [2022-11-19 07:10:38,112 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47290,47303] [2022-11-19 07:10:38,128 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50969,50982] [2022-11-19 07:10:38,143 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54551,54564] [2022-11-19 07:10:38,156 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58080,58093] [2022-11-19 07:10:38,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:38,214 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:10:38,320 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18815,18828] [2022-11-19 07:10:38,350 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25895,25908] [2022-11-19 07:10:38,364 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29420,29433] [2022-11-19 07:10:38,378 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32798,32811] [2022-11-19 07:10:38,404 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36856,36869] [2022-11-19 07:10:38,430 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40310,40323] [2022-11-19 07:10:38,446 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43875,43888] [2022-11-19 07:10:38,456 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47290,47303] [2022-11-19 07:10:38,468 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50969,50982] [2022-11-19 07:10:38,481 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54551,54564] [2022-11-19 07:10:38,492 WARN L234 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_66331795-f093-4479-aa2f-6e2db68be794/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58080,58093] [2022-11-19 07:10:38,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:38,558 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:10:38,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38 WrapperNode [2022-11-19 07:10:38,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:38,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:10:38,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:10:38,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:10:38,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,685 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2761 [2022-11-19 07:10:38,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:10:38,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:10:38,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:10:38,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:10:38,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:10:38,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:10:38,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:10:38,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:10:38,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (1/1) ... [2022-11-19 07:10:38,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:38,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:10:38,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:10:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:10:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:10:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:10:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:10:39,120 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:10:39,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:10:40,997 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:10:41,130 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:10:41,130 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:10:41,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:10:41 BoogieIcfgContainer [2022-11-19 07:10:41,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:10:41,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:10:41,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:10:41,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:10:41,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:10:37" (1/3) ... [2022-11-19 07:10:41,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4134dcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:10:41, skipping insertion in model container [2022-11-19 07:10:41,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:38" (2/3) ... [2022-11-19 07:10:41,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4134dcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:10:41, skipping insertion in model container [2022-11-19 07:10:41,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:10:41" (3/3) ... [2022-11-19 07:10:41,153 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2022-11-19 07:10:41,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:10:41,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-19 07:10:41,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:10:41,253 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;@2a34db5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:10:41,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-19 07:10:41,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 551 states, 539 states have (on average 1.784786641929499) internal successors, (962), 550 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-19 07:10:41,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:41,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:41,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1518492486, now seen corresponding path program 1 times [2022-11-19 07:10:41,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:41,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680932817] [2022-11-19 07:10:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:41,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:41,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:41,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680932817] [2022-11-19 07:10:41,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680932817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:41,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:41,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:41,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339801782] [2022-11-19 07:10:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:41,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:41,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:41,915 INFO L87 Difference]: Start difference. First operand has 551 states, 539 states have (on average 1.784786641929499) internal successors, (962), 550 states have internal predecessors, (962), 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 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:42,637 INFO L93 Difference]: Finished difference Result 746 states and 1267 transitions. [2022-11-19 07:10:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:10:42,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2022-11-19 07:10:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:42,664 INFO L225 Difference]: With dead ends: 746 [2022-11-19 07:10:42,664 INFO L226 Difference]: Without dead ends: 485 [2022-11-19 07:10:42,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:10:42,672 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2338 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:42,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 517 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:10:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-19 07:10:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2022-11-19 07:10:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 474 states have (on average 1.2552742616033756) internal successors, (595), 484 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 595 transitions. [2022-11-19 07:10:42,762 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 595 transitions. Word has length 59 [2022-11-19 07:10:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:42,763 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 595 transitions. [2022-11-19 07:10:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 595 transitions. [2022-11-19 07:10:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-19 07:10:42,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:42,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:42,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:10:42,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:42,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1943729877, now seen corresponding path program 1 times [2022-11-19 07:10:42,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:42,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705345132] [2022-11-19 07:10:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:42,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:42,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:42,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705345132] [2022-11-19 07:10:42,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705345132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:42,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:42,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:42,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104589341] [2022-11-19 07:10:42,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:42,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:42,969 INFO L87 Difference]: Start difference. First operand 485 states and 595 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:43,308 INFO L93 Difference]: Finished difference Result 566 states and 685 transitions. [2022-11-19 07:10:43,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:10:43,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2022-11-19 07:10:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:43,317 INFO L225 Difference]: With dead ends: 566 [2022-11-19 07:10:43,317 INFO L226 Difference]: Without dead ends: 333 [2022-11-19 07:10:43,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:10:43,322 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1147 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:43,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 234 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:10:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-19 07:10:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-11-19 07:10:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 1.2484472049689441) internal successors, (402), 332 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 402 transitions. [2022-11-19 07:10:43,377 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 402 transitions. Word has length 59 [2022-11-19 07:10:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:43,378 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 402 transitions. [2022-11-19 07:10:43,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 402 transitions. [2022-11-19 07:10:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-19 07:10:43,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:43,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:43,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:10:43,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:43,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:43,381 INFO L85 PathProgramCache]: Analyzing trace with hash -19682530, now seen corresponding path program 1 times [2022-11-19 07:10:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:43,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008414704] [2022-11-19 07:10:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:43,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:43,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:43,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008414704] [2022-11-19 07:10:43,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008414704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:43,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:43,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:43,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115984282] [2022-11-19 07:10:43,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:43,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:43,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:43,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:43,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:43,561 INFO L87 Difference]: Start difference. First operand 333 states and 402 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:43,785 INFO L93 Difference]: Finished difference Result 456 states and 553 transitions. [2022-11-19 07:10:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:10:43,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2022-11-19 07:10:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:43,787 INFO L225 Difference]: With dead ends: 456 [2022-11-19 07:10:43,787 INFO L226 Difference]: Without dead ends: 284 [2022-11-19 07:10:43,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:10:43,789 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 996 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:43,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 199 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:10:43,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-19 07:10:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-19 07:10:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 273 states have (on average 1.26007326007326) internal successors, (344), 283 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 344 transitions. [2022-11-19 07:10:43,812 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 344 transitions. Word has length 59 [2022-11-19 07:10:43,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:43,812 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 344 transitions. [2022-11-19 07:10:43,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 344 transitions. [2022-11-19 07:10:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 07:10:43,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:43,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:43,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:10:43,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash -732780502, now seen corresponding path program 1 times [2022-11-19 07:10:43,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:43,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986284778] [2022-11-19 07:10:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:43,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:43,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:43,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986284778] [2022-11-19 07:10:43,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986284778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:43,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:43,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302656027] [2022-11-19 07:10:43,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:43,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:43,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:43,953 INFO L87 Difference]: Start difference. First operand 284 states and 344 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:44,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:44,137 INFO L93 Difference]: Finished difference Result 389 states and 468 transitions. [2022-11-19 07:10:44,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:10:44,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2022-11-19 07:10:44,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:44,139 INFO L225 Difference]: With dead ends: 389 [2022-11-19 07:10:44,139 INFO L226 Difference]: Without dead ends: 243 [2022-11-19 07:10:44,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:10:44,140 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 829 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:44,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 185 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:10:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-19 07:10:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-11-19 07:10:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2586206896551724) internal successors, (292), 242 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 292 transitions. [2022-11-19 07:10:44,162 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 292 transitions. Word has length 61 [2022-11-19 07:10:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:44,162 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 292 transitions. [2022-11-19 07:10:44,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 292 transitions. [2022-11-19 07:10:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 07:10:44,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:44,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:44,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:10:44,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:44,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1082227329, now seen corresponding path program 1 times [2022-11-19 07:10:44,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:44,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066752550] [2022-11-19 07:10:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:44,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:44,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066752550] [2022-11-19 07:10:44,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066752550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:44,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:44,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179908958] [2022-11-19 07:10:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:44,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:44,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:44,505 INFO L87 Difference]: Start difference. First operand 243 states and 292 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:45,254 INFO L93 Difference]: Finished difference Result 521 states and 638 transitions. [2022-11-19 07:10:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 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 63 [2022-11-19 07:10:45,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:45,258 INFO L225 Difference]: With dead ends: 521 [2022-11-19 07:10:45,258 INFO L226 Difference]: Without dead ends: 446 [2022-11-19 07:10:45,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:45,261 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 907 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:45,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 826 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:10:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-19 07:10:45,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 243. [2022-11-19 07:10:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2543103448275863) internal successors, (291), 242 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 291 transitions. [2022-11-19 07:10:45,307 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 291 transitions. Word has length 63 [2022-11-19 07:10:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:45,307 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 291 transitions. [2022-11-19 07:10:45,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 291 transitions. [2022-11-19 07:10:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 07:10:45,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:45,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:45,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:10:45,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1413074335, now seen corresponding path program 1 times [2022-11-19 07:10:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:45,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371659123] [2022-11-19 07:10:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:45,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:45,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:45,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371659123] [2022-11-19 07:10:45,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371659123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:45,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:45,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:45,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097962830] [2022-11-19 07:10:45,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:45,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:45,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:45,706 INFO L87 Difference]: Start difference. First operand 243 states and 291 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:46,548 INFO L93 Difference]: Finished difference Result 493 states and 602 transitions. [2022-11-19 07:10:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:46,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 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 63 [2022-11-19 07:10:46,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:46,551 INFO L225 Difference]: With dead ends: 493 [2022-11-19 07:10:46,551 INFO L226 Difference]: Without dead ends: 442 [2022-11-19 07:10:46,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:10:46,555 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1190 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:46,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 950 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:10:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-19 07:10:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2022-11-19 07:10:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.25) internal successors, (290), 242 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 290 transitions. [2022-11-19 07:10:46,598 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 290 transitions. Word has length 63 [2022-11-19 07:10:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:46,598 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 290 transitions. [2022-11-19 07:10:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 290 transitions. [2022-11-19 07:10:46,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 07:10:46,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:46,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:46,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:10:46,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1960661089, now seen corresponding path program 1 times [2022-11-19 07:10:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:46,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816340129] [2022-11-19 07:10:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:46,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:46,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816340129] [2022-11-19 07:10:46,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816340129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:46,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:46,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:10:46,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936282938] [2022-11-19 07:10:46,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:10:46,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:46,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:10:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:10:46,939 INFO L87 Difference]: Start difference. First operand 243 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:47,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:47,395 INFO L93 Difference]: Finished difference Result 464 states and 544 transitions. [2022-11-19 07:10:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:10:47,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2022-11-19 07:10:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:47,398 INFO L225 Difference]: With dead ends: 464 [2022-11-19 07:10:47,398 INFO L226 Difference]: Without dead ends: 340 [2022-11-19 07:10:47,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:10:47,400 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1340 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:47,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 422 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:10:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-19 07:10:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 243. [2022-11-19 07:10:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2456896551724137) internal successors, (289), 242 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 289 transitions. [2022-11-19 07:10:47,441 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 289 transitions. Word has length 63 [2022-11-19 07:10:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:47,442 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 289 transitions. [2022-11-19 07:10:47,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 289 transitions. [2022-11-19 07:10:47,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:10:47,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:47,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:47,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:10:47,444 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash 718759200, now seen corresponding path program 1 times [2022-11-19 07:10:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:47,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61469874] [2022-11-19 07:10:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:47,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:47,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61469874] [2022-11-19 07:10:47,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61469874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:47,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:47,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:47,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529260011] [2022-11-19 07:10:47,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:47,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:47,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:47,791 INFO L87 Difference]: Start difference. First operand 243 states and 289 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:48,635 INFO L93 Difference]: Finished difference Result 474 states and 571 transitions. [2022-11-19 07:10:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:48,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2022-11-19 07:10:48,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:48,638 INFO L225 Difference]: With dead ends: 474 [2022-11-19 07:10:48,638 INFO L226 Difference]: Without dead ends: 434 [2022-11-19 07:10:48,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:48,639 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 843 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:48,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 844 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:10:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-19 07:10:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2022-11-19 07:10:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2413793103448276) internal successors, (288), 242 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2022-11-19 07:10:48,684 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 64 [2022-11-19 07:10:48,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:48,685 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2022-11-19 07:10:48,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2022-11-19 07:10:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:10:48,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:48,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:48,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:10:48,686 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:48,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1193853636, now seen corresponding path program 1 times [2022-11-19 07:10:48,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:48,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370218415] [2022-11-19 07:10:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:48,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:48,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370218415] [2022-11-19 07:10:48,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370218415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:48,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:48,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:48,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496129879] [2022-11-19 07:10:48,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:48,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:48,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:48,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:48,993 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:49,849 INFO L93 Difference]: Finished difference Result 461 states and 555 transitions. [2022-11-19 07:10:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2022-11-19 07:10:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:49,852 INFO L225 Difference]: With dead ends: 461 [2022-11-19 07:10:49,852 INFO L226 Difference]: Without dead ends: 442 [2022-11-19 07:10:49,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:10:49,853 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1159 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:49,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 987 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:10:49,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-19 07:10:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2022-11-19 07:10:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 242 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 287 transitions. [2022-11-19 07:10:49,896 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 287 transitions. Word has length 65 [2022-11-19 07:10:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:49,896 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 287 transitions. [2022-11-19 07:10:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 287 transitions. [2022-11-19 07:10:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:10:49,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:49,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:49,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:10:49,898 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1508275324, now seen corresponding path program 1 times [2022-11-19 07:10:49,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:49,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761988392] [2022-11-19 07:10:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:50,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:50,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761988392] [2022-11-19 07:10:50,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761988392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:50,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:50,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212628012] [2022-11-19 07:10:50,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:50,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:50,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:50,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:50,193 INFO L87 Difference]: Start difference. First operand 243 states and 287 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:50,938 INFO L93 Difference]: Finished difference Result 440 states and 523 transitions. [2022-11-19 07:10:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:50,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2022-11-19 07:10:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:50,940 INFO L225 Difference]: With dead ends: 440 [2022-11-19 07:10:50,940 INFO L226 Difference]: Without dead ends: 434 [2022-11-19 07:10:50,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:50,941 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 807 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:50,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 924 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:10:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-19 07:10:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2022-11-19 07:10:50,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2327586206896552) internal successors, (286), 242 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2022-11-19 07:10:50,990 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 65 [2022-11-19 07:10:50,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:50,991 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2022-11-19 07:10:50,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2022-11-19 07:10:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:10:50,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:50,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:50,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:10:50,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:50,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1207057476, now seen corresponding path program 1 times [2022-11-19 07:10:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:50,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532753506] [2022-11-19 07:10:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:50,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:51,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:51,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532753506] [2022-11-19 07:10:51,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532753506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:51,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:51,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:51,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233514412] [2022-11-19 07:10:51,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:51,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:51,287 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:52,117 INFO L93 Difference]: Finished difference Result 527 states and 635 transitions. [2022-11-19 07:10:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:52,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2022-11-19 07:10:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:52,120 INFO L225 Difference]: With dead ends: 527 [2022-11-19 07:10:52,120 INFO L226 Difference]: Without dead ends: 446 [2022-11-19 07:10:52,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:52,121 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 772 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:52,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1071 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:10:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-19 07:10:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 243. [2022-11-19 07:10:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.228448275862069) internal successors, (285), 242 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 285 transitions. [2022-11-19 07:10:52,172 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 285 transitions. Word has length 65 [2022-11-19 07:10:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:52,173 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 285 transitions. [2022-11-19 07:10:52,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 285 transitions. [2022-11-19 07:10:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:10:52,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:52,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:52,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:10:52,175 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:52,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:52,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1230734052, now seen corresponding path program 1 times [2022-11-19 07:10:52,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:52,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396374231] [2022-11-19 07:10:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:52,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:52,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:52,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396374231] [2022-11-19 07:10:52,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396374231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:52,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:52,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:52,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127779684] [2022-11-19 07:10:52,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:52,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:52,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:52,458 INFO L87 Difference]: Start difference. First operand 243 states and 285 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:53,217 INFO L93 Difference]: Finished difference Result 477 states and 570 transitions. [2022-11-19 07:10:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:53,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2022-11-19 07:10:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:53,219 INFO L225 Difference]: With dead ends: 477 [2022-11-19 07:10:53,219 INFO L226 Difference]: Without dead ends: 434 [2022-11-19 07:10:53,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:53,220 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 795 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:53,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 935 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:10:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-19 07:10:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2022-11-19 07:10:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2241379310344827) internal successors, (284), 242 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 284 transitions. [2022-11-19 07:10:53,273 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 284 transitions. Word has length 65 [2022-11-19 07:10:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:53,273 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 284 transitions. [2022-11-19 07:10:53,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 284 transitions. [2022-11-19 07:10:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:10:53,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:53,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:53,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:10:53,275 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash -873801820, now seen corresponding path program 1 times [2022-11-19 07:10:53,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:53,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695626264] [2022-11-19 07:10:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:53,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:53,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:53,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695626264] [2022-11-19 07:10:53,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695626264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:53,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:53,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:53,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640247450] [2022-11-19 07:10:53,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:53,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:53,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:53,583 INFO L87 Difference]: Start difference. First operand 243 states and 284 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:54,384 INFO L93 Difference]: Finished difference Result 498 states and 599 transitions. [2022-11-19 07:10:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:54,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2022-11-19 07:10:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:54,386 INFO L225 Difference]: With dead ends: 498 [2022-11-19 07:10:54,386 INFO L226 Difference]: Without dead ends: 442 [2022-11-19 07:10:54,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:54,387 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1062 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:54,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 1113 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:10:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-19 07:10:54,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 243. [2022-11-19 07:10:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2198275862068966) internal successors, (283), 242 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 283 transitions. [2022-11-19 07:10:54,439 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 283 transitions. Word has length 65 [2022-11-19 07:10:54,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:54,439 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 283 transitions. [2022-11-19 07:10:54,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:54,439 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 283 transitions. [2022-11-19 07:10:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:10:54,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:54,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:54,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:10:54,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1099115196, now seen corresponding path program 1 times [2022-11-19 07:10:54,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:54,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248873522] [2022-11-19 07:10:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:54,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:54,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248873522] [2022-11-19 07:10:54,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248873522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:54,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:54,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:54,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787216939] [2022-11-19 07:10:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:54,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:54,677 INFO L87 Difference]: Start difference. First operand 243 states and 283 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:55,417 INFO L93 Difference]: Finished difference Result 440 states and 519 transitions. [2022-11-19 07:10:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:55,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2022-11-19 07:10:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:55,419 INFO L225 Difference]: With dead ends: 440 [2022-11-19 07:10:55,419 INFO L226 Difference]: Without dead ends: 434 [2022-11-19 07:10:55,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:55,421 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1128 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:55,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1002 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:10:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-19 07:10:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 243. [2022-11-19 07:10:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2155172413793103) internal successors, (282), 242 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 282 transitions. [2022-11-19 07:10:55,476 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 282 transitions. Word has length 65 [2022-11-19 07:10:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:55,476 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 282 transitions. [2022-11-19 07:10:55,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 282 transitions. [2022-11-19 07:10:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:10:55,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:55,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:55,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:10:55,478 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:10:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:55,479 INFO L85 PathProgramCache]: Analyzing trace with hash 106808155, now seen corresponding path program 1 times [2022-11-19 07:10:55,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:55,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147268040] [2022-11-19 07:10:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:55,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:57,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:57,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147268040] [2022-11-19 07:10:57,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147268040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:57,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:57,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-19 07:10:57,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580961957] [2022-11-19 07:10:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:57,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:10:57,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:10:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2022-11-19 07:10:57,491 INFO L87 Difference]: Start difference. First operand 243 states and 282 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 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) [2022-11-19 07:11:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:02,843 INFO L93 Difference]: Finished difference Result 751 states and 871 transitions. [2022-11-19 07:11:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-19 07:11:02,844 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 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) Word has length 66 [2022-11-19 07:11:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:02,846 INFO L225 Difference]: With dead ends: 751 [2022-11-19 07:11:02,846 INFO L226 Difference]: Without dead ends: 713 [2022-11-19 07:11:02,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=315, Invalid=1847, Unknown=0, NotChecked=0, Total=2162 [2022-11-19 07:11:02,851 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2135 mSDsluCounter, 7353 mSDsCounter, 0 mSdLazyCounter, 3738 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:02,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 7876 Invalid, 3738 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3738 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 07:11:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-19 07:11:02,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 258. [2022-11-19 07:11:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 247 states have (on average 1.222672064777328) internal successors, (302), 257 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 302 transitions. [2022-11-19 07:11:02,937 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 302 transitions. Word has length 66 [2022-11-19 07:11:02,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:02,937 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 302 transitions. [2022-11-19 07:11:02,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 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) [2022-11-19 07:11:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 302 transitions. [2022-11-19 07:11:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:11:02,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:02,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:02,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:11:02,939 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash -543233893, now seen corresponding path program 1 times [2022-11-19 07:11:02,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:02,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086961768] [2022-11-19 07:11:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:03,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:03,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086961768] [2022-11-19 07:11:03,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086961768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:03,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:03,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:11:03,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081768585] [2022-11-19 07:11:03,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:03,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:11:03,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:11:03,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:11:03,496 INFO L87 Difference]: Start difference. First operand 258 states and 302 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 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) [2022-11-19 07:11:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:04,504 INFO L93 Difference]: Finished difference Result 544 states and 633 transitions. [2022-11-19 07:11:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:11:04,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 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) Word has length 66 [2022-11-19 07:11:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:04,507 INFO L225 Difference]: With dead ends: 544 [2022-11-19 07:11:04,507 INFO L226 Difference]: Without dead ends: 437 [2022-11-19 07:11:04,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:11:04,508 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1342 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:04,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 954 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:11:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-19 07:11:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 188. [2022-11-19 07:11:04,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 181 states have (on average 1.2044198895027625) internal successors, (218), 187 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2022-11-19 07:11:04,594 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 66 [2022-11-19 07:11:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:04,595 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2022-11-19 07:11:04,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 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) [2022-11-19 07:11:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2022-11-19 07:11:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:11:04,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:04,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:04,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 07:11:04,596 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1410161897, now seen corresponding path program 1 times [2022-11-19 07:11:04,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:04,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629498523] [2022-11-19 07:11:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:04,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:05,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:05,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629498523] [2022-11-19 07:11:05,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629498523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:05,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:05,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-19 07:11:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753170031] [2022-11-19 07:11:05,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:05,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:11:05,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:11:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:11:05,264 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:06,548 INFO L93 Difference]: Finished difference Result 480 states and 585 transitions. [2022-11-19 07:11:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:11:06,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 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 67 [2022-11-19 07:11:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:06,550 INFO L225 Difference]: With dead ends: 480 [2022-11-19 07:11:06,550 INFO L226 Difference]: Without dead ends: 426 [2022-11-19 07:11:06,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:11:06,551 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 915 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:06,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2063 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:11:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-19 07:11:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 171. [2022-11-19 07:11:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.1927710843373494) internal successors, (198), 170 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 198 transitions. [2022-11-19 07:11:06,641 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 198 transitions. Word has length 67 [2022-11-19 07:11:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:06,641 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 198 transitions. [2022-11-19 07:11:06,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 198 transitions. [2022-11-19 07:11:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:11:06,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:06,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 07:11:06,643 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 866774441, now seen corresponding path program 1 times [2022-11-19 07:11:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:06,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033889548] [2022-11-19 07:11:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:06,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:07,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:07,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033889548] [2022-11-19 07:11:07,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033889548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:07,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:07,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-19 07:11:07,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836406477] [2022-11-19 07:11:07,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:07,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:11:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:11:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:11:07,834 INFO L87 Difference]: Start difference. First operand 171 states and 198 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:10,712 INFO L93 Difference]: Finished difference Result 500 states and 580 transitions. [2022-11-19 07:11:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:11:10,713 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 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 67 [2022-11-19 07:11:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:10,715 INFO L225 Difference]: With dead ends: 500 [2022-11-19 07:11:10,715 INFO L226 Difference]: Without dead ends: 487 [2022-11-19 07:11:10,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=214, Invalid=1118, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 07:11:10,717 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1565 mSDsluCounter, 3873 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:10,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 4190 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 07:11:10,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-19 07:11:10,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 178. [2022-11-19 07:11:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 177 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2022-11-19 07:11:10,816 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 67 [2022-11-19 07:11:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:10,817 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2022-11-19 07:11:10,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2022-11-19 07:11:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:11:10,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:10,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:10,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 07:11:10,819 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1780474025, now seen corresponding path program 1 times [2022-11-19 07:11:10,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:10,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122288000] [2022-11-19 07:11:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:12,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122288000] [2022-11-19 07:11:12,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122288000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:12,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:12,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-19 07:11:12,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535715966] [2022-11-19 07:11:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 07:11:12,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:12,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 07:11:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:11:12,008 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:14,789 INFO L93 Difference]: Finished difference Result 485 states and 565 transitions. [2022-11-19 07:11:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:11:14,790 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 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 67 [2022-11-19 07:11:14,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:14,792 INFO L225 Difference]: With dead ends: 485 [2022-11-19 07:11:14,792 INFO L226 Difference]: Without dead ends: 478 [2022-11-19 07:11:14,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=258, Invalid=1382, Unknown=0, NotChecked=0, Total=1640 [2022-11-19 07:11:14,794 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 932 mSDsluCounter, 4242 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:14,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 4560 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 07:11:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-19 07:11:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 178. [2022-11-19 07:11:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1849710982658959) internal successors, (205), 177 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2022-11-19 07:11:14,891 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 67 [2022-11-19 07:11:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:14,891 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2022-11-19 07:11:14,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2022-11-19 07:11:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:11:14,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:14,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:14,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 07:11:14,894 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:14,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash -588581152, now seen corresponding path program 1 times [2022-11-19 07:11:14,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:14,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099501181] [2022-11-19 07:11:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:15,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:15,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099501181] [2022-11-19 07:11:15,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099501181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:15,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:15,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 07:11:15,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925330468] [2022-11-19 07:11:15,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:15,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 07:11:15,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:15,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 07:11:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:11:15,769 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:17,519 INFO L93 Difference]: Finished difference Result 508 states and 608 transitions. [2022-11-19 07:11:17,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-19 07:11:17,519 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 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 67 [2022-11-19 07:11:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:17,521 INFO L225 Difference]: With dead ends: 508 [2022-11-19 07:11:17,521 INFO L226 Difference]: Without dead ends: 435 [2022-11-19 07:11:17,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2022-11-19 07:11:17,523 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 886 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:17,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 3060 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:11:17,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-19 07:11:17,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 169. [2022-11-19 07:11:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 1.1646341463414633) internal successors, (191), 168 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 191 transitions. [2022-11-19 07:11:17,654 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 191 transitions. Word has length 67 [2022-11-19 07:11:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:17,654 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 191 transitions. [2022-11-19 07:11:17,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 191 transitions. [2022-11-19 07:11:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:11:17,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:17,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:17,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 07:11:17,656 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash 183577999, now seen corresponding path program 1 times [2022-11-19 07:11:17,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:17,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528879797] [2022-11-19 07:11:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:18,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528879797] [2022-11-19 07:11:18,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528879797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:18,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:18,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-19 07:11:18,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481445317] [2022-11-19 07:11:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:18,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:11:18,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:18,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:11:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:11:18,591 INFO L87 Difference]: Start difference. First operand 169 states and 191 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 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) [2022-11-19 07:11:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:20,687 INFO L93 Difference]: Finished difference Result 416 states and 484 transitions. [2022-11-19 07:11:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:11:20,688 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 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) Word has length 68 [2022-11-19 07:11:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:20,689 INFO L225 Difference]: With dead ends: 416 [2022-11-19 07:11:20,690 INFO L226 Difference]: Without dead ends: 412 [2022-11-19 07:11:20,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2022-11-19 07:11:20,691 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1082 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:20,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 2793 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:11:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-19 07:11:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 164. [2022-11-19 07:11:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.1625) internal successors, (186), 163 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 186 transitions. [2022-11-19 07:11:20,770 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 186 transitions. Word has length 68 [2022-11-19 07:11:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:20,770 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 186 transitions. [2022-11-19 07:11:20,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 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) [2022-11-19 07:11:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 186 transitions. [2022-11-19 07:11:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:11:20,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:20,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:20,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 07:11:20,771 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash 734420341, now seen corresponding path program 1 times [2022-11-19 07:11:20,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:20,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065014719] [2022-11-19 07:11:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:20,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:21,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:21,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065014719] [2022-11-19 07:11:21,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065014719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:21,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:21,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-19 07:11:21,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817727512] [2022-11-19 07:11:21,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:21,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:11:21,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:11:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:11:21,260 INFO L87 Difference]: Start difference. First operand 164 states and 186 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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) [2022-11-19 07:11:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:22,277 INFO L93 Difference]: Finished difference Result 359 states and 426 transitions. [2022-11-19 07:11:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:11:22,278 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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) Word has length 68 [2022-11-19 07:11:22,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:22,279 INFO L225 Difference]: With dead ends: 359 [2022-11-19 07:11:22,279 INFO L226 Difference]: Without dead ends: 322 [2022-11-19 07:11:22,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:11:22,280 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 799 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:22,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1750 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:11:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-19 07:11:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 120. [2022-11-19 07:11:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.1610169491525424) internal successors, (137), 119 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2022-11-19 07:11:22,371 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 68 [2022-11-19 07:11:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:22,371 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2022-11-19 07:11:22,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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) [2022-11-19 07:11:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2022-11-19 07:11:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-19 07:11:22,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:22,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:22,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-19 07:11:22,373 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash -535879959, now seen corresponding path program 1 times [2022-11-19 07:11:22,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:22,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100160357] [2022-11-19 07:11:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:22,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:22,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:22,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100160357] [2022-11-19 07:11:22,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100160357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:22,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:22,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:11:22,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949075879] [2022-11-19 07:11:22,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:22,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:11:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:11:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:11:22,596 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:23,143 INFO L93 Difference]: Finished difference Result 244 states and 289 transitions. [2022-11-19 07:11:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:11:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 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 69 [2022-11-19 07:11:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:23,145 INFO L225 Difference]: With dead ends: 244 [2022-11-19 07:11:23,145 INFO L226 Difference]: Without dead ends: 187 [2022-11-19 07:11:23,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:11:23,151 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 359 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:23,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 402 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:11:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-19 07:11:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 120. [2022-11-19 07:11:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.152542372881356) internal successors, (136), 119 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 136 transitions. [2022-11-19 07:11:23,241 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 136 transitions. Word has length 69 [2022-11-19 07:11:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:23,241 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 136 transitions. [2022-11-19 07:11:23,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 136 transitions. [2022-11-19 07:11:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:11:23,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:23,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:23,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-19 07:11:23,243 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash 134483598, now seen corresponding path program 1 times [2022-11-19 07:11:23,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:23,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883799689] [2022-11-19 07:11:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:24,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:24,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883799689] [2022-11-19 07:11:24,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883799689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:24,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:24,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-19 07:11:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498604261] [2022-11-19 07:11:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 07:11:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 07:11:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:11:24,568 INFO L87 Difference]: Start difference. First operand 120 states and 136 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:27,958 INFO L93 Difference]: Finished difference Result 555 states and 671 transitions. [2022-11-19 07:11:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 07:11:27,960 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 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 71 [2022-11-19 07:11:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:27,962 INFO L225 Difference]: With dead ends: 555 [2022-11-19 07:11:27,962 INFO L226 Difference]: Without dead ends: 549 [2022-11-19 07:11:27,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2022-11-19 07:11:27,964 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1146 mSDsluCounter, 5085 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 5444 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:27,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 5444 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 07:11:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-19 07:11:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 139. [2022-11-19 07:11:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 1.1605839416058394) internal successors, (159), 138 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 159 transitions. [2022-11-19 07:11:28,049 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 159 transitions. Word has length 71 [2022-11-19 07:11:28,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:28,050 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 159 transitions. [2022-11-19 07:11:28,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 159 transitions. [2022-11-19 07:11:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:11:28,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:28,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-19 07:11:28,051 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1358946869, now seen corresponding path program 1 times [2022-11-19 07:11:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:28,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560783405] [2022-11-19 07:11:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:28,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:28,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:28,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560783405] [2022-11-19 07:11:28,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560783405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:28,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:28,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-19 07:11:28,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235692088] [2022-11-19 07:11:28,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:28,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:11:28,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:28,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:11:28,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:11:28,598 INFO L87 Difference]: Start difference. First operand 139 states and 159 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:29,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:29,846 INFO L93 Difference]: Finished difference Result 281 states and 337 transitions. [2022-11-19 07:11:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:11:29,846 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 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 72 [2022-11-19 07:11:29,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:29,847 INFO L225 Difference]: With dead ends: 281 [2022-11-19 07:11:29,847 INFO L226 Difference]: Without dead ends: 275 [2022-11-19 07:11:29,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:11:29,849 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 604 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:29,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1408 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:11:29,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-19 07:11:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 114. [2022-11-19 07:11:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1504424778761062) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2022-11-19 07:11:29,937 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 72 [2022-11-19 07:11:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:29,938 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2022-11-19 07:11:29,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2022-11-19 07:11:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:11:29,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:29,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:29,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-19 07:11:29,940 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -606084081, now seen corresponding path program 1 times [2022-11-19 07:11:29,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:29,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765065282] [2022-11-19 07:11:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:30,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765065282] [2022-11-19 07:11:30,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765065282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:30,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:30,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:30,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820401230] [2022-11-19 07:11:30,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:30,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:30,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:30,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:30,067 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:30,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:30,263 INFO L93 Difference]: Finished difference Result 188 states and 226 transitions. [2022-11-19 07:11:30,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:30,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2022-11-19 07:11:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:30,264 INFO L225 Difference]: With dead ends: 188 [2022-11-19 07:11:30,265 INFO L226 Difference]: Without dead ends: 151 [2022-11-19 07:11:30,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:30,266 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 53 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:30,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 243 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:11:30,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-19 07:11:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2022-11-19 07:11:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.1875) internal successors, (171), 144 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2022-11-19 07:11:30,428 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 87 [2022-11-19 07:11:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:30,428 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2022-11-19 07:11:30,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2022-11-19 07:11:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 07:11:30,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:30,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:30,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-19 07:11:30,430 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1933536821, now seen corresponding path program 1 times [2022-11-19 07:11:30,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:30,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148477300] [2022-11-19 07:11:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:30,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:30,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:30,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148477300] [2022-11-19 07:11:30,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148477300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:30,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:30,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:30,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350257195] [2022-11-19 07:11:30,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:30,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:30,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:30,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:30,585 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:30,890 INFO L93 Difference]: Finished difference Result 281 states and 349 transitions. [2022-11-19 07:11:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2022-11-19 07:11:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:30,892 INFO L225 Difference]: With dead ends: 281 [2022-11-19 07:11:30,892 INFO L226 Difference]: Without dead ends: 213 [2022-11-19 07:11:30,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:30,894 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 46 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:30,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 244 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:11:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-19 07:11:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2022-11-19 07:11:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.2227722772277227) internal successors, (247), 202 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2022-11-19 07:11:31,153 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 90 [2022-11-19 07:11:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:31,154 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2022-11-19 07:11:31,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2022-11-19 07:11:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:11:31,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:31,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:31,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-19 07:11:31,156 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1453338523, now seen corresponding path program 1 times [2022-11-19 07:11:31,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:31,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627598911] [2022-11-19 07:11:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:31,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:31,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:31,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627598911] [2022-11-19 07:11:31,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627598911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:31,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:31,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923334398] [2022-11-19 07:11:31,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:31,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:31,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:31,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:31,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:31,282 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:31,840 INFO L93 Difference]: Finished difference Result 455 states and 577 transitions. [2022-11-19 07:11:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-11-19 07:11:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:31,842 INFO L225 Difference]: With dead ends: 455 [2022-11-19 07:11:31,842 INFO L226 Difference]: Without dead ends: 329 [2022-11-19 07:11:31,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:31,843 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 39 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:31,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 245 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:11:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-19 07:11:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 311. [2022-11-19 07:11:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.2483870967741935) internal successors, (387), 310 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 387 transitions. [2022-11-19 07:11:32,232 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 387 transitions. Word has length 93 [2022-11-19 07:11:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:32,232 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 387 transitions. [2022-11-19 07:11:32,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 387 transitions. [2022-11-19 07:11:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 07:11:32,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:32,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:32,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-19 07:11:32,234 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1999538379, now seen corresponding path program 1 times [2022-11-19 07:11:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:32,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793975461] [2022-11-19 07:11:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:32,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:32,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:32,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793975461] [2022-11-19 07:11:32,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793975461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:32,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:32,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342506976] [2022-11-19 07:11:32,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:32,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:32,372 INFO L87 Difference]: Start difference. First operand 311 states and 387 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:33,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:33,249 INFO L93 Difference]: Finished difference Result 779 states and 997 transitions. [2022-11-19 07:11:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:33,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2022-11-19 07:11:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:33,252 INFO L225 Difference]: With dead ends: 779 [2022-11-19 07:11:33,252 INFO L226 Difference]: Without dead ends: 545 [2022-11-19 07:11:33,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:33,256 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 29 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:33,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 246 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:11:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-19 07:11:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 511. [2022-11-19 07:11:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.2607843137254902) internal successors, (643), 510 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 643 transitions. [2022-11-19 07:11:33,925 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 643 transitions. Word has length 96 [2022-11-19 07:11:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:33,925 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 643 transitions. [2022-11-19 07:11:33,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 643 transitions. [2022-11-19 07:11:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-19 07:11:33,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:33,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:33,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-19 07:11:33,927 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:33,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1002635342, now seen corresponding path program 1 times [2022-11-19 07:11:33,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:33,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271338266] [2022-11-19 07:11:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:33,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:34,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:34,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271338266] [2022-11-19 07:11:34,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271338266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:34,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:34,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:11:34,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093945944] [2022-11-19 07:11:34,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:34,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:11:34,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:34,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:11:34,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:11:34,057 INFO L87 Difference]: Start difference. First operand 511 states and 643 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:36,581 INFO L93 Difference]: Finished difference Result 1936 states and 2462 transitions. [2022-11-19 07:11:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:11:36,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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 99 [2022-11-19 07:11:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:36,587 INFO L225 Difference]: With dead ends: 1936 [2022-11-19 07:11:36,588 INFO L226 Difference]: Without dead ends: 1502 [2022-11-19 07:11:36,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:11:36,590 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 535 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:36,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 767 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:11:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-11-19 07:11:37,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 732. [2022-11-19 07:11:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.2476060191518468) internal successors, (912), 731 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 912 transitions. [2022-11-19 07:11:37,881 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 912 transitions. Word has length 99 [2022-11-19 07:11:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:37,881 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 912 transitions. [2022-11-19 07:11:37,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 912 transitions. [2022-11-19 07:11:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 07:11:37,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:37,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:37,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-19 07:11:37,883 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:37,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash 487787018, now seen corresponding path program 1 times [2022-11-19 07:11:37,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:37,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869682590] [2022-11-19 07:11:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:38,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:38,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869682590] [2022-11-19 07:11:38,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869682590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:38,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:38,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:11:38,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626904029] [2022-11-19 07:11:38,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:38,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:11:38,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:11:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:11:38,108 INFO L87 Difference]: Start difference. First operand 732 states and 912 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:39,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:39,138 INFO L93 Difference]: Finished difference Result 1389 states and 1743 transitions. [2022-11-19 07:11:39,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:11:39,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 101 [2022-11-19 07:11:39,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:39,141 INFO L225 Difference]: With dead ends: 1389 [2022-11-19 07:11:39,141 INFO L226 Difference]: Without dead ends: 734 [2022-11-19 07:11:39,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:11:39,142 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 311 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:39,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 253 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:11:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-11-19 07:11:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 732. [2022-11-19 07:11:40,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.2462380300957592) internal successors, (911), 731 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 911 transitions. [2022-11-19 07:11:40,218 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 911 transitions. Word has length 101 [2022-11-19 07:11:40,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:40,218 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 911 transitions. [2022-11-19 07:11:40,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 911 transitions. [2022-11-19 07:11:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 07:11:40,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:40,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:40,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-19 07:11:40,219 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:40,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:40,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1847468716, now seen corresponding path program 1 times [2022-11-19 07:11:40,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:40,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758505161] [2022-11-19 07:11:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:40,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:40,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:40,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758505161] [2022-11-19 07:11:40,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758505161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:40,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:40,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:40,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929701387] [2022-11-19 07:11:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:40,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:40,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:40,285 INFO L87 Difference]: Start difference. First operand 732 states and 911 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:41,828 INFO L93 Difference]: Finished difference Result 1661 states and 2085 transitions. [2022-11-19 07:11:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:41,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2022-11-19 07:11:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:41,832 INFO L225 Difference]: With dead ends: 1661 [2022-11-19 07:11:41,832 INFO L226 Difference]: Without dead ends: 1006 [2022-11-19 07:11:41,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:41,833 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 64 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:41,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 192 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:11:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-11-19 07:11:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1004. [2022-11-19 07:11:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.2422731804586242) internal successors, (1246), 1003 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1246 transitions. [2022-11-19 07:11:43,195 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1246 transitions. Word has length 101 [2022-11-19 07:11:43,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:43,195 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1246 transitions. [2022-11-19 07:11:43,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1246 transitions. [2022-11-19 07:11:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 07:11:43,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:43,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:43,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-19 07:11:43,196 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash -478179870, now seen corresponding path program 1 times [2022-11-19 07:11:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:43,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503777150] [2022-11-19 07:11:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:43,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:43,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:43,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503777150] [2022-11-19 07:11:43,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503777150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:43,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:43,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:11:43,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698993689] [2022-11-19 07:11:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:43,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:11:43,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:11:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:11:43,457 INFO L87 Difference]: Start difference. First operand 1004 states and 1246 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:45,625 INFO L93 Difference]: Finished difference Result 1353 states and 1669 transitions. [2022-11-19 07:11:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:11:45,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 102 [2022-11-19 07:11:45,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:45,630 INFO L225 Difference]: With dead ends: 1353 [2022-11-19 07:11:45,630 INFO L226 Difference]: Without dead ends: 1351 [2022-11-19 07:11:45,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:11:45,632 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 276 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:45,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 780 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:11:45,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2022-11-19 07:11:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1004. [2022-11-19 07:11:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.226321036889332) internal successors, (1230), 1003 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1230 transitions. [2022-11-19 07:11:47,328 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1230 transitions. Word has length 102 [2022-11-19 07:11:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:47,328 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1230 transitions. [2022-11-19 07:11:47,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1230 transitions. [2022-11-19 07:11:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-19 07:11:47,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:47,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:47,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-19 07:11:47,331 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash -623509692, now seen corresponding path program 1 times [2022-11-19 07:11:47,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:47,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727459966] [2022-11-19 07:11:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:47,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:11:47,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:47,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727459966] [2022-11-19 07:11:47,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727459966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:47,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:47,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:11:47,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704210778] [2022-11-19 07:11:47,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:47,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:11:47,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:47,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:11:47,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:11:47,630 INFO L87 Difference]: Start difference. First operand 1004 states and 1230 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:50,565 INFO L93 Difference]: Finished difference Result 2495 states and 3071 transitions. [2022-11-19 07:11:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:11:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 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 118 [2022-11-19 07:11:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:50,569 INFO L225 Difference]: With dead ends: 2495 [2022-11-19 07:11:50,569 INFO L226 Difference]: Without dead ends: 1561 [2022-11-19 07:11:50,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:11:50,570 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 442 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:50,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 356 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:11:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2022-11-19 07:11:51,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1004. [2022-11-19 07:11:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.2253240279162512) internal successors, (1229), 1003 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1229 transitions. [2022-11-19 07:11:51,913 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1229 transitions. Word has length 118 [2022-11-19 07:11:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:51,914 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1229 transitions. [2022-11-19 07:11:51,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1229 transitions. [2022-11-19 07:11:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:11:51,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:51,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:51,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-19 07:11:51,916 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:11:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2029975393, now seen corresponding path program 1 times [2022-11-19 07:11:51,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:51,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846387099] [2022-11-19 07:11:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:11:53,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:53,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846387099] [2022-11-19 07:11:53,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846387099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:53,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:53,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-19 07:11:53,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670852850] [2022-11-19 07:11:53,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:53,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:11:53,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:53,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:11:53,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:11:53,382 INFO L87 Difference]: Start difference. First operand 1004 states and 1229 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:11:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:59,421 INFO L93 Difference]: Finished difference Result 3782 states and 4654 transitions. [2022-11-19 07:11:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:11:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 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 120 [2022-11-19 07:11:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:59,426 INFO L225 Difference]: With dead ends: 3782 [2022-11-19 07:11:59,427 INFO L226 Difference]: Without dead ends: 2847 [2022-11-19 07:11:59,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 07:11:59,429 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1039 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:59,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 3275 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:11:59,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2022-11-19 07:12:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1022. [2022-11-19 07:12:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 1.2233104799216454) internal successors, (1249), 1021 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:12:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1249 transitions. [2022-11-19 07:12:01,054 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1249 transitions. Word has length 120 [2022-11-19 07:12:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:01,055 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1249 transitions. [2022-11-19 07:12:01,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:12:01,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1249 transitions. [2022-11-19 07:12:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-19 07:12:01,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:01,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:01,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-19 07:12:01,057 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-19 07:12:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1302073409, now seen corresponding path program 1 times [2022-11-19 07:12:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:01,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327849271] [2022-11-19 07:12:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:06,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:06,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327849271] [2022-11-19 07:12:06,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327849271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:06,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350513595] [2022-11-19 07:12:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:06,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:06,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:06,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:06,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66331795-f093-4479-aa2f-6e2db68be794/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:12:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:06,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-19 07:12:06,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:19,624 INFO L328 TraceCheckSpWp]: Computing backward predicates...